Bump transformers from 4.51.0 to 4.52.1

Bumps [transformers](https://github.com/huggingface/transformers) from 4.51.0 to 4.52.1.
- [Release notes](https://github.com/huggingface/transformers/releases)
- [Commits](huggingface/transformers@v4.51.0...v4.52.1)

---
updated-dependencies:
- dependency-name: transformers
  dependency-version: 4.52.1
  dependency-type: direct:production
...

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

Author: dependabot[bot]

requirements.txt

@@ -4,5 +4,5 @@ pydantic==1.10.15
 sse-starlette==2.1.0
 langchain==0.3.0
 langchain-community==0.3.0
-transformers==4.51.0
+transformers==4.52.1
 google-cloud-aiplatform==1.53.0