Don't dogfood Release Update Check in this repo

[Copilot]

This PR stops dogfooding the Release Update Check workflow in this repository.

Changes

• Added release-update to EXCLUDED_WORKFLOWS in scripts/dogfood.sh.
• Removed .github/workflows/trigger-release-update.yml, the auto-generated trigger workflow for release-update checks.

Fixes #344

Generated by Update PR Body

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

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📝 Walkthrough

Walkthrough

This PR removes the trigger-release-update.yml GitHub Actions workflow file and adds "release-update" to the EXCLUDED_WORKFLOWS array in the dogfood script, preventing the release-update workflow from being synced during dogfooding.

Changes

Cohort / File(s)	Summary
Workflow Removal .github/workflows/trigger-release-update.yml	Deleted the scheduled and manual trigger workflow that orchestrated release-update operations with associated permissions and secrets.
Dogfood Exclusion scripts/dogfood.sh	Added "release-update" to EXCLUDED_WORKFLOWS array to prevent syncing example.yml files for this workflow during dogfooding.

Estimated code review effort

🎯 1 (Trivial) | ⏱️ ~3 minutes

Possibly related PRs

• Clarify lock files and trigger files are auto-generated; add do-not-modify headers #335: Modifies scripts/dogfood.sh and release-update workflow handling with regeneration behavior and exclusion logic.
• Fix workflow drift for release-update and downstream-users docs #247: Manages the release-update workflow source and documentation to prevent workflow drift.
• Exclude pr-review-fork from dogfood sync and clarify skipped output #308: Applies the same pattern of excluding workflows from dogfooding by modifying EXCLUDED_WORKFLOWS and removing corresponding workflow files.

Suggested reviewers

• github-actions

Poem

🐰 A workflow takes flight, away from this nest,
Release-update rests, no dogfood test,
Clean and excluded, just as it ought,
Less syncing chaos than we once fought! 🎉

🚥 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 accurately summarizes the main change: removing the Release Update Check from being dogfooded in this repository.
Linked Issues check	✅ Passed	The changes align with the objective to stop dogfooding the Release Update Check by removing the trigger workflow and excluding it from the dogfood script.
Out of Scope Changes check	✅ Passed	All changes are directly scoped to the stated objective: removing the Release Update Check from being dogfooded in the repository.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.

_{✏️ Tip: You can configure your own custom pre-merge checks in the settings.}

✨ Finishing Touches

• 📝 Generate docstrings (stacked PR)
• 📝 Generate docstrings (commit on current branch)

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Post copyable unit tests in a comment
• Commit unit tests in branch copilot/remove-release-update-check

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