Update format.yml

[glenn-jocher]

🛠️ PR Summary

_{Made with ❤️ by Ultralytics Actions}

🌟 Summary

This PR updates the GitHub Actions workflow for code formatting to use a new branch of the Ultralytics Actions.

📊 Key Changes

• 🔄 Updated the GitHub Actions workflow in format.yml to use ultralytics/actions@cla-branch instead of ultralytics/actions@main.

🎯 Purpose & Impact

• 🚀 Improved Process: By switching to the cla-branch, the workflow might incorporate experimental or advanced features not yet available in the main branch.
• 🔍 Enhanced Labeling: Continues using automated labeling for issues and PRs, which can streamline project management.
• ⚙️ Adaptability: This change might reflect a shift towards more flexible or specific workflow needs, potentially allowing for quicker adaptation to changes in development practices.

[UltralyticsAssistant]

👋 Hello @glenn-jocher, thank you for submitting an ultralytics/velocity 🚀 PR! To ensure a seamless integration of your work, please review the following checklist:

• ✅ Define a Purpose: Clearly explain the purpose of your fix or feature in your PR description, and link to any relevant issues. Ensure your commit messages are clear, concise, and adhere to the project's conventions.
• ✅ Synchronize with Source: Confirm your PR is synchronized with the ultralytics/velocity main branch. If it's behind, update it by clicking the 'Update branch' button or by running git pull and git merge main locally.
• ✅ Ensure CI Checks Pass: Verify all Ultralytics Continuous Integration (CI) checks are passing. If any checks fail, please address the issues.
• ✅ Update Documentation: Update the relevant documentation for any new or modified features.
• ✅ Add Tests: If applicable, include or update tests to cover your changes, and confirm that all tests are passing.
• ✅ Sign the CLA: Please ensure you have signed our Contributor License Agreement if this is your first Ultralytics PR by writing "I have read the CLA Document and I sign the CLA" in a new message.
• ✅ Minimize Changes: Limit your changes to the minimum necessary for your bug fix or feature addition. "It is not daily increase but daily decrease, hack away the unessential. The closer to the source, the less wastage there is." — Bruce Lee

This is an automated response, and an Ultralytics engineer will assist you soon. For more guidance, please refer to our Contributing Guide. Don’t hesitate to leave a comment if you have any questions. Thank you for contributing to Ultralytics! 🚀