Update minimum Python>=3.7.0

[glenn-jocher]

🛠️ PR Summary

_{Made with ❤️ by Ultralytics Actions}

🌟 Summary

Upgraded the minimum required Python version for YOLOv5.

📊 Key Changes

• Changed the minimum Python version requirement from 3.6.2 to 3.7.0 in the check_python function within utils/general.py.

🎯 Purpose & Impact

• Ensures compatibility with newer Python features and potential performance improvements.
• Users must upgrade to at least Python 3.7.0 to use YOLOv5, which could require changes in their environment setup.
• 🚀 May lead to dropping outdated dependencies and taking advantage of newer language features, which could improve the overall quality and efficiency of the codebase.