Bump werkzeug from 3.0.3 to 3.0.6 in /requirements

Bumps [werkzeug](https://github.com/pallets/werkzeug) from 3.0.3 to 3.0.6.
- [Release notes](https://github.com/pallets/werkzeug/releases)
- [Changelog](https://github.com/pallets/werkzeug/blob/main/CHANGES.rst)
- [Commits](pallets/werkzeug@3.0.3...3.0.6)

---
updated-dependencies:
- dependency-name: werkzeug
  dependency-type: indirect
...

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

Author: dependabot[bot]

requirements/tests.txt

@@ -46,7 +46,7 @@ sqlalchemy==2.0.32
     # via flask-sqlalchemy
 typing-extensions==4.12.2
     # via sqlalchemy
-werkzeug==3.0.3
+werkzeug==3.0.6
     # via flask
 wtforms==3.1.2
     # via flask-wtf