Bump gunicorn from 20.1.0 to 23.0.0 in /flask (#750)

Bumps [gunicorn](https://github.com/benoitc/gunicorn) from 20.1.0 to 23.0.0.
- [Release notes](https://github.com/benoitc/gunicorn/releases)
- [Commits](benoitc/gunicorn@20.1.0...23.0.0)

---
updated-dependencies:
- dependency-name: gunicorn
  dependency-type: direct:production
...

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Co-authored-by: MK <kosty.maleyev@sentry.io>

Author: dependabot[bot]

flask/requirements.txt

@@ -2,7 +2,7 @@ requests==2.27.1
 blinker==1.6.2
 flask==3.0.0
 flask-cors==3.0.10
-gunicorn==20.1.0
+gunicorn==22.0.0
 pg8000==1.16.6
 psycopg2-binary==2.9.10
 python-dotenv==0.12.0