build: bump gunicorn from 20.1.0 to 23.0.0 in /App

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
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

App/requirements.txt

@@ -2,7 +2,7 @@ openai==1.57.0
 Quart==0.19.4
 quart-cors==0.7.0
 Quart-Session==3.0.0
-gunicorn==20.1.0
+gunicorn==23.0.0
 uvicorn==0.24.0
 numpy
 pandas