Pin transformers in nv-inference (deepspeedai#4606)

      nv-inference is failing due to changes on the transformers side. Sample
passing build
[here](https://github.com/microsoft/DeepSpeed/actions/runs/6619077509/job/17978847686#step:5:19)
and sample failing build
[here](https://github.com/microsoft/DeepSpeed/actions/runs/6619077509/job/18349776000#step:5:19)

.github/workflows/nv-inference.yml

@@ -34,6 +34,7 @@ jobs:
         run: |
           git clone https://github.com/huggingface/transformers
           cd transformers
+          git checkout f370bebdc
           git rev-parse --short HEAD
           pip install .