Bump uvicorn from 0.25.0 to 0.34.0 in /backend

Bumps [uvicorn](https://github.com/encode/uvicorn) from 0.25.0 to 0.34.0.
- [Release notes](https://github.com/encode/uvicorn/releases)
- [Changelog](https://github.com/encode/uvicorn/blob/master/CHANGELOG.md)
- [Commits](Kludex/uvicorn@0.25.0...0.34.0)

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

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

Author: dependabot[bot]

backend/requirements-docker.txt

@@ -5,4 +5,4 @@ httpx==0.26.0
 pydantic==2.6.1
 python-multipart==0.0.9
 python-jose==3.3.0
-uvicorn==0.27.1
+uvicorn==0.34.0

backend/src/requirements_docker.txt

@@ -6,5 +6,5 @@ pydantic==2.5.3
 python-multipart==0.0.7
 python-jose==3.3.0
 SQLAlchemy==2.0.24
-uvicorn==0.25.0
+uvicorn==0.34.0