chore(hooks): serve the 0.3.29 hooks binary

[gram-bot]

Generated by the hooks release workflow after publishing hooks@0.3.29.

The server proxies only the versions it pins and republishes the hooks plugin only when the generator version changes, so until this merges and deploys, every installation keeps downloading the previously pinned binary.

Regenerated by server/cmd/pin-hooks-release from the release's own checksums.txt. The outgoing version stays in the retired set: bootstrap scripts already on user machines keep requesting it until their repo republishes.

---

Summary by cubic

Pins the server to the hooks@0.3.29 binary so newly rendered bootstrap scripts install the latest release instead of 0.3.28.

• New bootstrap scripts download 0.3.29 and verify its updated checksums.
• 0.3.28 moves into the retired set, so existing installations that haven't regenerated their bootstrap script can still install.
• Bumps the generator version to 39 so plugins regenerate with the new binary and its checksums.

^{Written for commit 16030d6. Summary will update on new commits.}

[changeset-bot]

🦋 Changeset detected

Latest commit: 16030d6

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 1 package

Name	Type
server	Patch

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Click here if you're a maintainer who wants to add another changeset to this PR

[blacksmith-sh]

Found 13 test failures on Blacksmith runners:

Failures

Test	View Logs
github.com/speakeasy-api/gram/server/internal/admin/TestMain	View Logs
github.com/speakeasy-api/gram/server/internal/auth/TestMain	View Logs
github.com/speakeasy-api/gram/server/internal/authz/TestMain	View Logs
github.com/speakeasy-api/gram/server/internal/background/activities/outbox_relay/ TestMain	View Logs
github.com/speakeasy-api/gram/server/internal/background/activities/risk_analysis/ TestMain	View Logs
github.com/speakeasy-api/gram/server/internal/collections/TestMain	View Logs
github.com/speakeasy-api/gram/server/internal/customdomains/TestMain	View Logs
github.com/speakeasy-api/gram/server/internal/demoseed/TestMain	View Logs
github.com/speakeasy-api/gram/server/internal/deviceintegrations/TestMain	View Logs
github.com/speakeasy-api/gram/server/internal/killswitches/TestMain	View Logs

...and 3 more test failures. View all on Blacksmith

^{Need help on this PR? Tag @codesmith-bot with what you need.}