build(deps): bump werkzeug from 3.1.6 to 3.1.8

Bumps [werkzeug](https://github.com/pallets/werkzeug) from 3.1.6 to 3.1.8.
- [Release notes](https://github.com/pallets/werkzeug/releases)
- [Changelog](https://github.com/pallets/werkzeug/blob/main/CHANGES.rst)
- [Commits](pallets/werkzeug@3.1.6...3.1.8)

---
updated-dependencies:
- dependency-name: werkzeug
  dependency-version: 3.1.8
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

requirements.txt

@@ -7,4 +7,4 @@ flask-login==0.6.3
 flask-session==0.8.0
 pytest==9.0.3
 coverage==7.13.4
-Werkzeug==3.1.6
+Werkzeug==3.1.8