build(deps): bump uvicorn from 0.32.1 to 0.34.0 in /backend

Bumps [uvicorn](https://github.com/encode/uvicorn) from 0.32.1 to 0.34.0.
- [Release notes](https://github.com/encode/uvicorn/releases)
- [Changelog](https://github.com/encode/uvicorn/blob/master/CHANGELOG.md)
- [Commits](encode/uvicorn@0.32.1...0.34.0)

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

Signed-off-by: dependabot[bot] <[email protected]>

backend/requirements.txt

@@ -1,7 +1,7 @@
 --extra-index-url https://download.pytorch.org/whl/cpu
 fastapi==0.115.6
 httpx>=0.25.0
-uvicorn==0.32.1
+uvicorn==0.34.0
 gunicorn==23.0.0
 python-multipart>=0.0.6
 gelf-formatter==0.2.1