Downgrade PyTorch to 2.1 due to NetworkError on windows

[belerico]

Summary

torch==2.2 raises an torch.distributed.DistNetworkError: Unknown error error on Windows from the torch\distributed\rendezvous.py:174: DistNetworkError line. This PR reverts it back to 2.1

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• Bug fix (non-breaking change that solves an issue)

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