Bump uvicorn from 0.15.0 to 0.16.0 (#295)

Bumps [uvicorn](https://github.com/encode/uvicorn) from 0.15.0 to 0.16.0.
- [Release notes](https://github.com/encode/uvicorn/releases)
- [Changelog](https://github.com/encode/uvicorn/blob/master/CHANGELOG.md)
- [Commits](encode/uvicorn@0.15.0...0.16.0)

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

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

requirements.txt

@@ -15,5 +15,5 @@ python-jose==3.3.0
 python-socketio[asyncio_client]==5.0.4  # pin for now to solve unknown connection issue
 pyyaml==6.0
 shortuuid==1.0.1
-uvicorn==0.15.0
+uvicorn==0.16.0
 requests==2.26.0