Relax torch and transformers versions

[abdulfatir]

Description of changes: This PR relaxes torch and transformers versions to allow for older versions that were used during original training. This is needed in light of recent torch/transformers versions being slower with DDP.

Relevant issues (but the problem may be deeper than these):

• https://github.com/huggingface/transformers/issues/30840
• https://github.com/pytorch/pytorch/issues/127077
• https://github.com/NVIDIA/nccl/issues/1298

By submitting this pull request, I confirm that you can use, modify, copy, and redistribute this contribution, under the terms of your choice.

[lostella]

@abdulfatir could you just link in the OP all the issues related to performance regressions?

[abdulfatir]

@abdulfatir could you just link in the OP all the issues related to performance regressions?

Done.