chore(deps): bump transformers in /backend/engines/cosyvoice_subprocess

Bumps [transformers](https://github.com/huggingface/transformers) from 4.57.6 to 5.10.1.
- [Release notes](https://github.com/huggingface/transformers/releases)
- [Commits](https://github.com/huggingface/transformers/compare/v4.57.6...v5.10.1)

---
updated-dependencies:
- dependency-name: transformers
  dependency-version: 5.10.1
  dependency-type: direct:production
...

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

backend/engines/cosyvoice_subprocess/requirements.txt

@@ -49,5 +49,5 @@ protobuf==4.25.9
 pydantic==2.7.0
 rich==13.7.1
 soundfile==0.12.1
-transformers==4.57.6
+transformers==5.10.1
 x-transformers==2.11.24