TorchScript torch==1.7.0 Path support

[miknyko]

HI,

Fixed the pathlib.Path error in low version pytorch(1.7.1)

it has to be converted to a string representation of the path before be passed in scriptmodule.save

thanks

🛠️ PR Summary

_{Made with ❤️ by Ultralytics Actions}

🌟 Summary

Improved compatibility in TorchScript export with type casting.

📊 Key Changes

• Modified the torch.jit.trace call to cast the file name to a string before saving.

🎯 Purpose & Impact

• 🎯 Purpose: To ensure that the file name is explicitly treated as a string, which improves compatibility and prevents potential type errors during TorchScript export.
• 💥 Impact: This change is likely to increase the robustness of exporting models to TorchScript, especially in environments where the type of the file name could be misinterpreted. This could benefit users trying to deploy YOLOv5 models across different platforms and devices.

[miknyko]

@glenn-jocher
Hi, I modified several other places as well, in case there is an error as well, is that ok ?

[glenn-jocher]

@miknyko let's just fix this one issue, as the other packages have not had any bug reports yet. Thanks!

[glenn-jocher]

@miknyko PR is merged. Thank you for your contributions to YOLOv5 🚀 and Vision AI ⭐

[miknyko]

@glenn-jocher
Thanks. Great project by the way!