Bump werkzeug in /examples/serverless/flask_google_cloud_bot

Bumps [werkzeug](https://github.com/pallets/werkzeug) from 3.1.4 to 3.1.5.
- [Release notes](https://github.com/pallets/werkzeug/releases)
- [Changelog](https://github.com/pallets/werkzeug/blob/main/CHANGES.rst)
- [Commits](pallets/werkzeug@3.1.4...3.1.5)

---
updated-dependencies:
- dependency-name: werkzeug
  dependency-version: 3.1.5
  dependency-type: direct:production
...

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

Author: dependabot[bot]

examples/serverless/flask_google_cloud_bot/requirements.txt

@@ -1,4 +1,4 @@
 pyTelegramBotAPI==4.11.0
 Flask==3.0.0
 gunicorn==23.0.0
-Werkzeug==3.1.4
+Werkzeug==3.1.5