build(deps): bump werkzeug from 3.0.1 to 3.0.3 in /docker/test-shadow

Bumps [werkzeug](https://github.com/pallets/werkzeug) from 3.0.1 to 3.0.3.
- [Release notes](https://github.com/pallets/werkzeug/releases)
- [Changelog](https://github.com/pallets/werkzeug/blob/main/CHANGES.rst)
- [Commits](pallets/werkzeug@3.0.1...3.0.3)

---
updated-dependencies:
- dependency-name: werkzeug
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

docker/test-shadow/requirements.txt

@@ -20,5 +20,5 @@ markupsafe==2.1.3
     #   werkzeug
 typing-extensions==4.8.0
     # via test-shadow (pyproject.toml)
-werkzeug==3.0.1
+werkzeug==3.0.3
     # via flask