Bump elevenlabs from 1.57.0 to 2.8.1

Bumps [elevenlabs](https://github.com/elevenlabs/elevenlabs-python) from 1.57.0 to 2.8.1.
- [Release notes](https://github.com/elevenlabs/elevenlabs-python/releases)
- [Commits](https://github.com/elevenlabs/elevenlabs-python/compare/v1.57.0...v2.8.1)

---
updated-dependencies:
- dependency-name: elevenlabs
  dependency-version: 2.8.1
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

requirements.txt

@@ -17,5 +17,5 @@ spacy==3.8.7
 torch==2.7.0
 transformers==4.52.4
 ffmpeg-python==0.2.0
-elevenlabs==1.57.0
+elevenlabs==2.8.1
 yt-dlp==2025.5.22