Bump elevenlabs from 1.8.1 to 1.50.4

Bumps [elevenlabs](https://github.com/elevenlabs/elevenlabs-python) from 1.8.1 to 1.50.4.
- [Release notes](https://github.com/elevenlabs/elevenlabs-python/releases)
- [Commits](elevenlabs/elevenlabs-python@v1.8.1...1.50.4)

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

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

requirements.txt

@@ -19,6 +19,6 @@ spacy==3.8.3
 torch==2.4.1
 transformers==4.48.1
 ffmpeg-python==0.2.0
-elevenlabs==1.8.1
+elevenlabs==1.50.4
 yt-dlp==2025.1.15
 numpy==1.26.4