Ignore github URLs in broken link checks

[glenn-jocher]

🛠️ PR Summary

_{Made with ❤️ by Ultralytics Actions}

🌟 Summary

Improved the URL validation process to better handle GitHub links in the utilities of the Ultralytics Actions.

📊 Key Changes

• Updated the URL validation function in common_utils.py to ignore GitHub links, treating them similarly to private repositories.

🎯 Purpose & Impact

• Enhanced Reliability: By ignoring GitHub URLs, this change reduces unnecessary validation errors and retries, especially useful for handling private repositories. 🚀
• User Convenience: Streamlines processes involving GitHub URLs, potentially improving workflow efficiency for users handling multiple repository links. 🌐

[UltralyticsAssistant]

👋 Hello @glenn-jocher, thank you for submitting an ultralytics/actions 🚀 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 and adhere to the project's conventions.
• ✅ Synchronize with Source: Confirm your PR is synchronized with the ultralytics/actions main branch. If it's behind, update it by clicking the 'Update branch' button or by running git pull and git merge main locally.
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• ✅ Update Documentation: Update the relevant documentation for any new or modified features.
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• ✅ 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

For more guidance, please refer to our Contributing Guide. If you have any questions, feel free to leave a comment. Thank you for improving the URL validation efficiency in our repository! 🌟

Please note that this is an automated response. An Ultralytics engineer will be available to assist you soon. 🚀