chore(deps): bump transformers in /plugins/model/llm-ChatGLM2 (#5183)

Bumps [transformers](https://github.com/huggingface/transformers) from 4.50.0 to 4.52.1.
- [Release notes](https://github.com/huggingface/transformers/releases)
- [Commits](https://github.com/huggingface/transformers/compare/v4.50.0...v4.52.1)

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

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plugins/model/llm-ChatGLM2/requirements.txt

@@ -7,5 +7,5 @@ sse_starlette==1.6.5
 starlette==0.27.0
 tiktoken==0.4.0
 torch==2.7.1
-transformers==4.50.0
+transformers==4.52.1
 uvicorn==0.23.2