Add Prettier for YAML formatting to Ultralytics Actions

[glenn-jocher]

🛠️ PR Summary

_{Made with ❤️ by Ultralytics Actions}

🌟 Summary

Improved GitHub Actions configuration for better code formatting and validation.

📊 Key Changes

• Changed the event trigger from pull_request_target to pull_request, enhancing security and workflow triggers.
• Split YAML formatting into its own setting, now handled by prettier, emphasizing clearer structure and dedicated processing.

🎯 Purpose & Impact

• Security & Reliability: Switching to pull_request from pull_request_target reduces security risks and aligns with best practices, ensuring that only trusted code triggers actions in a PR.
• Code Quality: Separating YAML formatting with prettier ensures more specialized and appropriate formatting, improving readability and maintainability of configuration files.
• User Experience: These changes make the development process smoother and safer, ultimately leading to a more robust and user-friendly application. Developers can expect more reliable automated formatting, reducing minor manual corrections and increasing focus on significant improvements.

Emoji guide 🧩:

• 🚀 Enhancing security and workflow efficiency.
• ✨ Introducing specialized formatting for better code quality.
• 😊 Improving developer and user experience with streamlined processes.