ci: allow Changesets release PR creation

[jaruesink]

Add pull-requests write permission required by changesets/action to create the release PR after merges.

Summary by CodeRabbit

• Chores
  • Updated release automation permissions to support creating or modifying release pull requests.

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[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Repository UI

Review profile: CHILL

Plan: Pro

Run ID: 5576c4e6-0f78-4e2f-8ebb-015d0814d45e

📥 Commits

Reviewing files that changed from the base of the PR and between 034ad60 and 76f9377.

📒 Files selected for processing (1)

• .github/workflows/release.yml

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Walkthrough

The release workflow’s top-level permissions now include pull-requests: write, while existing workflow steps and job logic remain unchanged.

Changes

Release workflow authorization

Layer / File(s)	Summary
Pull request write permission .github/workflows/release.yml	Adds pull-requests: write to the workflow permissions.

Estimated code review effort: 1 (Trivial) | ~2 minutes

Poem

I’m a rabbit with permissions bright,
Granting pull requests a write.
The release hops on its way,
With existing steps in play.
One small key, and all is right!

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title clearly matches the main change: updating CI permissions so Changesets can create release pull requests.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch fix/release-workflow-pr-permission

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