chore(ci): migrate runners to depot

[goocarlos]

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Related Issue

Closes #111

Summary

This pull request migrates GitHub Actions jobs in .github/workflows/cla.yml, .github/workflows/pr.yml, .github/workflows/release.yml, and .github/workflows/test.yml from ubuntu-latest to depot-ubuntu-24.04.

The workflow triggers, permissions, Python matrix, and pinned action versions are unchanged. The change is limited to the runner label so CLA, PR validation, test, and release automation execute on the Depot runner pool.

The branch commit has been re-authored as WH-2099 <wh2099@pm.me> so CLA validation is tied to the local maintainer author instead of the original contributor who cannot sign the CLA.

Checklist

• This pull request links the issue it resolves or advances
• This pull request title follows Conventional Commits, and any breaking change is marked with !
• If CLA Assistant prompted me, I signed CLA.md in the pull request conversation

[github-actions]

All contributors on this pull request have signed the CLA.
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