chore(deps): Bump sentence-transformers from 3.4.0 to 3.4.1 in /backend/python/transformers (#4748)

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

Bumps [sentence-transformers](https://github.com/UKPLab/sentence-transformers) from 3.4.0 to 3.4.1.
- [Release notes](https://github.com/UKPLab/sentence-transformers/releases)
- [Commits](https://github.com/UKPLab/sentence-transformers/compare/v3.4.0...v3.4.1)

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

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