fix(deps): bump certifi to 2026.10.19

certifi 2026.10.19 removes the emSign ECC Root CA - G3 root after eight
eMudhra intermediate CA private keys were compromised (https://thehackernews.com/2026/10/eight-emudhra-ca-keys-compromised.html).
requests and httpx trust certifi's bundle and do not check revocation.

Bump the locked certifi and release 0.46.6. The certifi requirement for
installs is unchanged.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

Author: lawrence-u10d

CHANGELOG.md

@@ -1,3 +1,8 @@
+## 0.46.6
+
+### Fixes
+* Bump locked `certifi` to 2026.10.19, which removes the emSign ECC Root CA - G3 root after eight eMudhra intermediate CA private keys were compromised. `requests` and `httpx` trust certifi's bundle and do not check revocation, so with the older bundle they accepted certificates chaining to that root. Only the lockfile changes; the `certifi` requirement for installs is unchanged, so upgrade `certifi` in your own environment.
+
 ## 0.46.5
 
 ### Fixes

src/unstructured_client/_version.py

@@ -3,10 +3,10 @@
 import importlib.metadata
 
 __title__: str = "unstructured-client"
-__version__: str = "0.46.5"
+__version__: str = "0.46.6"
 __openapi_doc_version__: str = "1.2.31"
 __gen_version__: str = "2.680.0"
-__user_agent__: str = "speakeasy-sdk/python 0.46.5 2.680.0 1.2.31 unstructured-client"
+__user_agent__: str = "speakeasy-sdk/python 0.46.6 2.680.0 1.2.31 unstructured-client"
 
 try:
     if __package__ is not None: