Bump gunicorn in /examples/serverless/flask_google_cloud_bot

Bumps [gunicorn](https://github.com/benoitc/gunicorn) from 22.0.0 to 23.0.0.
- [Release notes](https://github.com/benoitc/gunicorn/releases)
- [Commits](benoitc/gunicorn@22.0.0...23.0.0)

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

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Author: dependabot[bot]

examples/serverless/flask_google_cloud_bot/requirements.txt

@@ -1,4 +1,4 @@
 pyTelegramBotAPI==4.11.0
 Flask==3.0.0
-gunicorn==22.0.0
+gunicorn==23.0.0
 Werkzeug==3.0.6