Bump transformers in /docs/user/samples/translation/src

Bumps [transformers](https://github.com/huggingface/transformers) from 4.21.1 to 4.30.0.
- [Release notes](https://github.com/huggingface/transformers/releases)
- [Commits](huggingface/transformers@v4.21.1...v4.30.0)

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

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

Author: dependabot[bot]

docs/user/samples/translation/src/requirements.txt

@@ -1,5 +1,5 @@
 sentencepiece==0.1.96
-transformers==4.21.1
+transformers==4.30.0
 
 # Bake torch, tensorflow into base image with CUDA
 # torch==1.10.1