Add Python version output

[glenn-jocher]

i.e.

YOLOv5 🚀 v6.1-185-g4a295b1 Python-3.9.0 torch-1.11.0 CPU

🛠️ PR Summary

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🌟 Summary

Refactoring code for readability and consistency.

📊 Key Changes

• Renamed the function file_update_date() to file_date() in utils/general.py for clarity.
• Updated references of the renamed function in utils/torch_utils.py.

🎯 Purpose & Impact

• Enhances code maintainability by using more intuitive function naming.
• The impact on users is minimal as this is an internal change, but developers will benefit from more clearly named functions.