Bump transformers in /src/HuggingfaceTokenizer/Rest

Bumps [transformers](https://github.com/huggingface/transformers) from 4.49.0 to 4.50.0.
- [Release notes](https://github.com/huggingface/transformers/releases)
- [Commits](huggingface/transformers@v4.49.0...v4.50.0)

---
updated-dependencies:
- dependency-name: transformers
  dependency-version: 4.50.0
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

src/HuggingfaceTokenizer/Rest/requirements.txt

@@ -1,2 +1,2 @@
 Flask==2.3.3
-transformers==4.49.0
+transformers==4.50.0