Bump uvicorn[standard] from 0.26.0 to 0.27.0 in /server

Bumps [uvicorn[standard]](https://github.com/encode/uvicorn) from 0.26.0 to 0.27.0.
- [Release notes](https://github.com/encode/uvicorn/releases)
- [Changelog](https://github.com/encode/uvicorn/blob/master/CHANGELOG.md)
- [Commits](encode/uvicorn@0.26.0...0.27.0)

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

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

server/requirements.txt

@@ -36,7 +36,7 @@ websockets==12.*
 # deploy
 psycopg2==2.9.9
 gunicorn==21.2.0
-uvicorn[standard]==0.26.0
+uvicorn[standard]==0.27.0
 
 # dev
 daphne==4.0.*