Update to HF_HOME from TRANSFORMERS_CACHE (#4816)
Addresses the following warning:
```
/tmp/actions-runner/_work/DeepSpeed/DeepSpeed/unit-test-venv/lib/python3.8/site-packages/transformers/utils/hub.py:123: FutureWarning: Using `TRANSFORMERS_CACHE` is deprecated and will be removed in v5 of Transformers. Use `HF_HOME` instead.
```
and the code on the transformers side is
[here](https://github.com/huggingface/transformers/blob/1a585c1222a56bcaecc070966d558d4a9d862e83/src/transformers/utils/hub.py#L86C1-L96C81).
