Bump werkzeug from 2.3.4 to 3.0.1 in /examples/docker-flask (#588)

Bumps [werkzeug](https://github.com/pallets/werkzeug) from 2.3.4 to 3.0.1.
- [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/2.3.4...3.0.1)

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

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examples/docker-flask/requirements.txt

@@ -17,4 +17,4 @@ PyYAML==6.0
 qrcode==7.4.2
 six==1.16.0
 typing_extensions==4.5.0
-Werkzeug==2.3.4
+Werkzeug==3.0.1