chore(deps): bump uvicorn from 0.19.0 to 0.23.2

Bumps [uvicorn](https://github.com/encode/uvicorn) from 0.19.0 to 0.23.2.
- [Release notes](https://github.com/encode/uvicorn/releases)
- [Changelog](https://github.com/encode/uvicorn/blob/master/CHANGELOG.md)
- [Commits](encode/uvicorn@0.19.0...0.23.2)

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

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

requirements.txt

@@ -8,7 +8,7 @@ celery == 5.2.2
 azure-storage-blob == 12.12.0
 python-dotenv ~= 0.21
 gunicorn == 20.1.0
-uvicorn == 0.19.0
+uvicorn == 0.23.2
 whitenoise == 6.2.0
 django-ical == 1.8.0
 slack-sdk == 3.19.3