chore(deps): Bump gunicorn from 21.2.0 to 23.0.0 in /src/python-app

Bumps [gunicorn](https://github.com/benoitc/gunicorn) from 21.2.0 to 23.0.0.
- [Release notes](https://github.com/benoitc/gunicorn/releases)
- [Commits](benoitc/gunicorn@21.2.0...23.0.0)

---
updated-dependencies:
- dependency-name: gunicorn
  dependency-version: 23.0.0
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

src/python-app/requirements.txt

@@ -1,5 +1,5 @@
 Flask==2.3.3
 Werkzeug==2.3.7
 psutil==7.1.3
-gunicorn==21.2.0
+gunicorn==23.0.0
 requests==2.31.0