Bump werkzeug from 0.15.5 to 2.2.3 in /examples/server/wsgi

Bumps [werkzeug](https://github.com/pallets/werkzeug) from 0.15.5 to 2.2.3.
- [Release notes](https://github.com/pallets/werkzeug/releases)
- [Changelog](https://github.com/pallets/werkzeug/blob/main/CHANGES.rst)
- [Commits](https://github.com/pallets/werkzeug/compare/0.15.5...2.2.3)

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

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

examples/server/wsgi/requirements.txt

@@ -12,4 +12,4 @@ pyparsing==2.1.10
 python-engineio
 python-socketio
 six==1.11.0
-Werkzeug==0.15.5
+Werkzeug==2.2.3