Bump werkzeug from 2.2.3 to 2.3.8 in /example (#2059) #nolog

Bumps [werkzeug](https://github.com/pallets/werkzeug) from 2.2.3 to 2.3.8.
- [Release notes](https://github.com/pallets/werkzeug/releases)
- [Changelog](https://github.com/pallets/werkzeug/blob/main/CHANGES.rst)
- [Commits](pallets/werkzeug@2.2.3...2.3.8)

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

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

example/requirements.txt

@@ -12,5 +12,5 @@ MarkupSafe==2.1.1
 python-engineio
 python-socketio
 six==1.11.0
-Werkzeug==2.2.3
+Werkzeug==2.3.8
 zipp==3.8.1