ci: revert self-hosted toggle on this public repo (hosted-only)

[WomB0ComB0]

Reverts the self-hosted runner toggle on this public repo back to ubuntu-latest.

Public repositories get GitHub-hosted Actions for free and are excluded from the org's self-hosted runner group (which also disallows public repos), so the toggle was inert here and never routed to a self-hosted runner. Self-hosted is reserved for the private repos that were affected by the hosted-runner outage. Removing the unused toggle to keep public CI clearly hosted-only.

Merge on green.

Summary by CodeRabbit

• Chores
  • Automated changelog, translation parity, labeling, link-checking, validation, and stale-item workflows now run on GitHub-hosted Ubuntu runners rather than conditionally using self-hosted runners. This standardizes where these repository checks run.

[coderabbitai]

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No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Advanced

Run ID: 68f00469-321d-4eab-94c6-df222feeb3d5

📥 Commits

Reviewing files that changed from the base of the PR and between fd71173 and 5b59a81.

📒 Files selected for processing (6)

• .github/workflows/changelog-sync.yml
• .github/workflows/i18n-parity.yml
• .github/workflows/labeler.yml
• .github/workflows/lychee.yml
• .github/workflows/required.yml
• .github/workflows/stale.yml

Included review availability: This review used your included allowance. Your plan provides up to 1 included review per hour; 0 remain after this review.

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📝 Walkthrough

Walkthrough

The changed workflow jobs now run on ubuntu-latest unconditionally. They no longer select the self-hosted runner based on USE_SELF_HOSTED.

Changes

Workflow runner updates

Layer / File(s)	Summary
Set workflow jobs to hosted runners .github/workflows/changelog-sync.yml, .github/workflows/i18n-parity.yml, .github/workflows/labeler.yml, .github/workflows/lychee.yml, .github/workflows/required.yml, .github/workflows/stale.yml	The standalone workflow jobs and five jobs in required.yml now use ubuntu-latest unconditionally. The previous conditional self-hosted runner selection was removed.

Priority: ⬇️ Low

Estimated code review effort: 1 (Trivial) | ~3 minutes

Change: Bug fix

Merge Risk: ⚪ Minimal · up to 5b59a

These workflows are configured to use hosted runners, matching the stated goal for this public repository. No actionable merge-blocking risk is evident; merge after normal checks.

Architecture Summary

Architecture risk: 🔵 Low · up to 5b59a

The changed surface does not map to a changed system, dependency edge, entrypoint, or external dependency.

Changed systems: None identified.

Architecture concerns
No architecture-level concerns identified.

Review details

Before / after behavior

• observed — Modified behavior in .github/workflows/changelog-sync.yml: The job now always uses ubuntu-latest; the previous conditional selected the self-hosted Linux x64 zima runner when vars.USE_SELF_HOSTED was 'true'.
• observed — Modified behavior in .github/workflows/i18n-parity.yml: The job runner is now always ubuntu-latest; the previous condition selected the self-hosted Linux x64 Zima runner when USE_SELF_HOSTED was true.
• observed — Modified behavior in .github/workflows/labeler.yml: The job now uses ubuntu-latest unconditionally, replacing the conditional selection of the self-hosted Linux x64 zima runner when USE_SELF_HOSTED was 'true'.
• observed — Modified behavior in .github/workflows/lychee.yml: The job now uses ubuntu-latest unconditionally instead of selecting the self-hosted Linux x64 zima runner when vars.USE_SELF_HOSTED is 'true'.

🚥 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 describes the main change: reverting the public repository to hosted-only CI runners. It is concise and specific.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check. Docstring coverage is scoped to functions touched by this diff. Analyzed 0 functions across 0…
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)

• Commit to this branch
• Create a new PR

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