Bump transformers

Bumps [transformers](https://github.com/huggingface/transformers) from 4.21.0 to 4.48.0.
- [Release notes](https://github.com/huggingface/transformers/releases)
- [Commits](huggingface/transformers@v4.21.0...v4.48.0)

---
updated-dependencies:
- dependency-name: transformers
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

test/sagemaker_tests/pytorch/training/resources/gpt2/requirements.txt

@@ -2,6 +2,6 @@ datasets
 numpy
 scipy
 torchnet
-transformers==4.21.0
+transformers==4.48.0
 smdebug
 humanize