chore: bump the security group across 1 directory with 4 updates

[dependabot]

Bumps the security group with 4 updates in the /examples/fastapi-backend-only-response-streaming/app directory: anyio, h11, idna and urllib3.

Updates anyio from 3.7.1 to 4.14.2

Release notes

Sourced from anyio's releases.

4.14.2

• Changed ByteReceiveStream.receive() implementations to raise a ValueError when max_bytes is not a positive integer (#1191)
• Fixed CapacityLimiter.total_tokens rejecting float("inf") when the limiter was instantiated outside of an event loop. The adapter setter checked for infinity by identity (value is math.inf), so only the exact math.inf singleton was accepted, while every backend setter (using math.isinf()) accepts any positive infinity (#1189; PR by @​greymoth-jp).
• Fixed to_process.run_sync() deadlocking when the worker function writes enough data to sys.stderr to fill the (undrained) pipe buffer. The worker process now redirects sys.stderr to os.devnull as well, matching the documented behavior
• Fixed TLSStream.wrap() matching an internationalized (unicode) host name against the peer certificate using IDNA 2003 (via the standard library) instead of IDNA 2008, which could cause the host name to be matched against the wrong certificate (#1208)
• Fixed anyio.open_process() (and run_process()) ignoring the extra_groups argument, as it mistakenly passed the value of the group argument instead (#1209)
• Fixed CapacityLimiter.acquire_nowait() and CapacityLimiter.acquire_nowait_on_behalf_of() raising trio.WouldBlock instead of anyio.WouldBlock on the trio backend when there are no tokens available (#1218)
• Fixed CapacityLimiter on the asyncio backend over-granting tokens (borrowed_tokens exceeding total_tokens and available_tokens going negative) when a non-blocking acquire was made in the window between a token being released and the notified waiter resuming. The freed token is now reserved for the woken waiter right away, so the non-blocking acquire correctly raises WouldBlock (#1170; PR by @​gaoflow)
• Fixed unnecessary CPU spin when delivering cancellation from CancelScope on asyncio under certain conditions, including improper cancel scope nesting (#1111)

4.14.1

• Fixed teardown of higher-scoped async fixtures failing on asyncio with RuntimeError: Attempted to exit cancel scope in a different task than it was entered in when an async test raise an outcome exception (e.g., pytest.skip(), pytest.xfail(), or pytest.fail()) (#1179; PR by @​EmmanuelNiyonshuti)
• Fixed CapacityLimiter.total_tokens rejecting a value of 0 when the limiter was instantiated outside of an event loop, contradicting the documented behavior of allowing 0 total tokens (#1183; PR by @​nyxst4ck)

4.14.0

• Added support for Python 3.15

• Added an asynchronous implementation of the itertools module (#998; PR by @​11kkw)

• Added the local_port parameter to connect_tcp() to allow binding to a specific local port before connecting (#1067; PR by @​nullwiz)

• Added support for custom capacity limiters in async path and file I/O functions and classes

• Added the create_task() task group method for easier asyncio migration (returns a TaskHandle) (#1098)

• Changed TaskGroup.start_soon() to return a TaskHandle

• Added an option for TaskGroup.start() to return a TaskHandle (which then contains the start value in the start_value property)

• Added the cancel() convenience method to TaskGroup as a shortcut for cancelling the task group's cancel scope

• Improved the error message when a known backend is not installed to suggest the install command (#1115; PR by @​EmmanuelNiyonshuti)

• Improved anyio.Path to preserve subclass types by returning Self in methods that return path objects (#1130; PR by @​EmmanuelNiyonshuti)

• Changed the parameter type annotation in anyio.Path.write_bytes() to accept any ReadableBuffer, thus allowing it to accept bytearray and memoryview to match pathlib.Path.write_bytes() (#1135; PR by @​SAY-5)

• Changed several type annotations to only accept callables returning coroutine-like objects instead of arbitrary awaitables:

  • TaskGroup.start_soon()
  • TaskGroup.start()
  • anyio.from_thread.run()

  This reverts an earlier change from v3.7.0 which was made in error. (#1153)

• Changed anyio.run to support callables returning arbitrary awaitables at runtime on all backends. Previously, this only worked on asyncio (#1171; PR by @​gschaffner)

• Changed several classes (and their subclasses) to have __slots__ (with __weakref__):

  • anyio.CancelScope

... (truncated)

Commits

• c384f99 Bumped up the version
• dbba29d Fixed 100% CPU spin on cancel scope misuse (#1217)
• 6bbc6c3 Fix CapacityLimiter over-granting tokens on asyncio (#1172)
• 6f82b25 Refactored TestTLSStream.test_receive_invalid_max_bytes() to be less flaky
• be24b04 Relaxed timeouts to fix test flakiness
• 8113506 Fix test flakiness caused by slow callback duration logging
• 1e988b6 Fixed CapacityLimiter raising trio.WouldBlock instead of anyio.WouldBlock (#1...
• 44713f3 Pin setup-uv to a commit sha across downstream jobs (#1213)
• f1b7301 Fixed stderr writes in a worker subprocess causing a deadlock (#1207)
• 212be93 Fix flaky test_tcp_listener_same_port using a hardcoded port (#1206)
• Additional commits viewable in compare view

Updates h11 from 0.14.0 to 0.16.0

Commits

• 1c5b075 this time for surer
• d9c3699 this time for sure...
• d91b9dd blacken
• 5a4683c Soothe mypy
• 9c9567f Bump version to 0.16.0
• 114803a Merge commit from fork
• 9462006 Bump version to 0.15.0
• 70a96be Merge pull request #181 from Julien00859/Julien00859/get_int_max_str_digits
• 60782ad Reject Content-Length longer 1 billion TB
• dff7cc3 Validate Chunked-Encoding chunk footer
• Additional commits viewable in compare view

Updates idna from 3.7 to 3.15

Release notes

Sourced from idna's releases.

v3.15

No release notes provided.

v3.14

No release notes provided.

v3.13

No release notes provided.

v3.12

No release notes provided.

v3.11

No release notes provided.

v3.10

No release notes provided.

v3.9

No release notes provided.

v3.8

What's Changed

• Fix regression where IDNAError exception was not being produced for certain inputs.
• Add support for Python 3.13, drop support for Python 3.5 as it is no longer testable.
• Documentation improvements
• Updates to package testing using Github actions

Thanks to Hugo van Kemenade for contributions to this release.

Full Changelog: kjd/idna@v3.7...v3.8

Changelog

Sourced from idna's changelog.

3.15 (2026-05-12)

• Enforce DNS-length cap on individual labels early in check_label, short-circuiting contextual-rule processing for oversized input while staying compatible with UTS 46 usage.
• Tidy core helpers: hoist bidi category sets to module-level frozensets (avoiding per-codepoint list construction), simplify length checks, and reuse the shared _unicode_dots_re from idna.core in the codec module.
• Use raise ... from err for proper exception chaining and switch internal string formatting to f-strings.
• Allow flit_core 4.x in the build backend.
• Expand the ruff lint set (flake8-bugbear, flake8-simplify, pyupgrade, perflint) and apply the surfaced fixes; pin lint CI to Python 3.14.
• Add Dependabot configuration for GitHub Actions.
• Convert README and HISTORY from reStructuredText to Markdown.
• Reference CVE-2026-45409 for the 3.14 advisory in place of the initial GHSA identifier.

Thanks to Felix Yan, Stan Ulbrych, and metsw24-max for contributions to this release.

3.14 (2026-05-10)

• Removed opportunity to process long inputs into quadratic time by rejecting oversize inputs up-front. Closes a bypass of the CVE-2024-3651 mitigation. [CVE-2026-45409]

Thanks to Stan Ulbrych for reporting the issue.

3.13 (2026-04-22)

• Correct classification error for codepoint U+A7F1

3.12 (2026-04-21)

• Update to Unicode 17.0.0.
• Issue a deprecation warning for the transitional argument.
• Added lazy-loading to provide some performance improvements.
• Removed vestiges of code related to Python 2 support, including segmentation of data structures specific to Jython.

Thanks to Rodrigo Nogueira for contributions to this release.

3.11 (2025-10-12)

• Update to Unicode 16.0.0, including significant changes to UTS46 processing. As a result of Unicode ending support for it, transitional processing no longer has an effect and returns the same result.

... (truncated)

Commits

• af30a09 Release 3.15
• 30314d4 Pre-release 3.15rc0
• 05d4b21 Merge pull request #237 from kjd/convert-docs-to-markdown
• 2987fdb Convert README and HISTORY from reStructuredText to Markdown
• 59fa800 Merge pull request #236 from kjd/dependabot/github_actions/actions-f3e34333ea
• def6983 Merge branch 'master' into dependabot/github_actions/actions-f3e34333ea
• bbd8004 Merge pull request #234 from StanFromIreland/patch-1
• edd07c0 Bump github/codeql-action from 3.35.2 to 4.35.2 in the actions group
• 5557db0 Merge branch 'master' into patch-1
• f11746c Merge pull request #235 from StanFromIreland/patch-2
• Additional commits viewable in compare view

Updates urllib3 from 1.26.19 to 2.7.0

Release notes

Sourced from urllib3's releases.

2.7.0

🚀 urllib3 is fundraising for HTTP/2 support

urllib3 is raising ~$40,000 USD to release HTTP/2 support and ensure long-term sustainable maintenance of the project after a sharp decline in financial support. If your company or organization uses Python and would benefit from HTTP/2 support in Requests, pip, cloud SDKs, and thousands of other projects please consider contributing financially to ensure HTTP/2 support is developed sustainably and maintained for the long-haul.

Thank you for your support.

Security

Addressed high-severity security issues. Impact was limited to specific use cases detailed in the accompanying advisories; overall user exposure was estimated to be marginal.

• Decompression-bomb safeguards of the streaming API were bypassed:

  1. When HTTPResponse.drain_conn() was called after the response had been read and decompressed partially. (Reported by @​Cycloctane)
  2. During the second HTTPResponse.read(amt=N) or HTTPResponse.stream(amt=N) call when the response was decompressed using the official Brotli library. (Reported by @​kimkou2024)

  See GHSA-mf9v-mfxr-j63j for details.

• HTTP pools created using ProxyManager.connection_from_url did not strip sensitive headers specified in Retry.remove_headers_on_redirect when redirecting to a different host. (GHSA-qccp-gfcp-xxvc reported by @​christos-spearbit)

Deprecations and Removals

• Used FutureWarning instead of DeprecationWarning for better visibility of existing deprecation notices. Rescheduled the removal of deprecated features to version 3.0. (urllib3/urllib3#3763)
• Removed support for end-of-life Python 3.9. (urllib3/urllib3#3720)
• Removed support for end-of-life PyPy3.10. (urllib3/urllib3#4979)
• Bumped the minimum supported pyOpenSSL version to 19.0.0. (urllib3/urllib3#3777)

Bugfixes

• Fixed a bug where HTTPResponse.read(amt=None) was ignoring decompressed data buffered from previous partial reads. (urllib3/urllib3#3636)
• Fixed a bug where HTTPResponse.read() could cache only part of the response after a partial read when cache_content=True. (urllib3/urllib3#4967)
• Fixed HTTPResponse.stream() and HTTPResponse.read_chunked() to handle amt=0. (urllib3/urllib3#3793)
• Updated _TYPE_BODY type alias to include missing Iterable[str], matching the documented and runtime behavior of chunked request bodies. (urllib3/urllib3#3798)
• Fixed LocationParseError when paths resembling schemeless URIs were passed to HTTPConnectionPool.urlopen(). (urllib3/urllib3#3352)
• Fixed BaseHTTPResponse.readinto() type annotation to accept memoryview in addition to bytearray, matching the io.RawIOBase.readinto contract and enabling use with io.BufferedReader without type errors. (urllib3/urllib3#3764)

2.6.3

🚀 urllib3 is fundraising for HTTP/2 support

urllib3 is raising ~$40,000 USD to release HTTP/2 support and ensure long-term sustainable maintenance of the project after a sharp decline in financial support. If your company or organization uses Python and would benefit from HTTP/2 support in Requests, pip, cloud SDKs, and thousands of other projects please consider contributing financially to ensure HTTP/2 support is developed sustainably and maintained for the long-haul.

Thank you for your support.

Changes

• Fixed a security issue where decompression-bomb safeguards of the streaming API were bypassed when HTTP redirects were followed. (CVE-2026-21441 reported by @​D47A, 8.9 High, GHSA-38jv-5279-wg99)
• Started treating Retry-After times greater than 6 hours as 6 hours by default. (urllib3/urllib3#3743)
• Fixed urllib3.connection.VerifiedHTTPSConnection on Emscripten. (urllib3/urllib3#3752)

2.6.2

... (truncated)

Changelog

Sourced from urllib3's changelog.

2.7.0 (2026-05-07)

Security

Addressed high-severity security issues. Impact was limited to specific use cases detailed in the accompanying advisories; overall user exposure was estimated to be marginal.

• Decompression-bomb safeguards of the streaming API were bypassed:

  1. When HTTPResponse.drain_conn() was called after the response had been read and decompressed partially.
  2. During the second HTTPResponse.read(amt=N) or HTTPResponse.stream(amt=N) call when the response was decompressed using the official Brotli <https://pypi.org/project/brotli/>__ library.

  See GHSA-mf9v-mfxr-j63j <https://github.com/urllib3/urllib3/security/advisories/GHSA-mf9v-mfxr-j63j>__ for details.

• HTTP pools created using ProxyManager.connection_from_url did not strip sensitive headers specified in Retry.remove_headers_on_redirect when redirecting to a different host. (GHSA-qccp-gfcp-xxvc <https://github.com/urllib3/urllib3/security/advisories/GHSA-qccp-gfcp-xxvc>__)

Deprecations and Removals

• Used FutureWarning instead of DeprecationWarning for better visibility of existing deprecation notices. Rescheduled the removal of deprecated features to version 3.0. ([#3763](https://github.com/urllib3/urllib3/issues/3763) <https://github.com/urllib3/urllib3/issues/3763>__)
• Removed support for end-of-life Python 3.9. ([#3720](https://github.com/urllib3/urllib3/issues/3720) <https://github.com/urllib3/urllib3/issues/3720>__)
• Removed support for end-of-life PyPy3.10. ([#4979](https://github.com/urllib3/urllib3/issues/4979) <https://github.com/urllib3/urllib3/issues/4979>__)
• Bumped the minimum supported pyOpenSSL version to 19.0.0. ([#3777](https://github.com/urllib3/urllib3/issues/3777) <https://github.com/urllib3/urllib3/issues/3777>__)

Bugfixes

• Fixed a bug where HTTPResponse.read(amt=None) was ignoring decompressed data buffered from previous partial reads. ([#3636](https://github.com/urllib3/urllib3/issues/3636) <https://github.com/urllib3/urllib3/issues/3636>__)
• Fixed a bug where HTTPResponse.read() could cache only part of the response after a partial read when cache_content=True.

... (truncated)

Commits

• 9a950b9 Release 2.7.0
• 5ec0de4 Merge commit from fork
• 2bdcc44 Merge commit from fork
• f45b0df Fix a misleading example for ProxyManager (#4970)
• 577193c Switch to nightly PyPy3.11 in CI for now (#4984)
• e90af45 Avoid infinite loop in HTTPResponse.read_chunked when amt=0 (#4974)
• 67ed74f Bump dev dependencies (#4972)
• 3abd481 Upgrade mypy to version 1.20.2 (#4978)
• 2b8725d Drop support for EOL PyPy3.10 (#4979)
• 2944b2a Upgrade setup-chrome and setup-firefox to fix warnings (#4973)
• Additional commits viewable in compare view

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