chore(deps): bump sentence-transformers from 5.2.2 to 5.2.3 in /backend/python/transformers (#8638)

chore(deps): bump sentence-transformers in /backend/python/transformers

Bumps [sentence-transformers](https://github.com/huggingface/sentence-transformers) from 5.2.2 to 5.2.3.
- [Release notes](https://github.com/huggingface/sentence-transformers/releases)
- [Commits](https://github.com/huggingface/sentence-transformers/compare/v5.2.2...v5.2.3)

---
updated-dependencies:
- dependency-name: sentence-transformers
  dependency-version: 5.2.3
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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