Bump werkzeug from 2.2.3 to 3.0.1 in /backend/requirements

Bumps [werkzeug](https://github.com/pallets/werkzeug) from 2.2.3 to 3.0.1.
- [Release notes](https://github.com/pallets/werkzeug/releases)
- [Changelog](https://github.com/pallets/werkzeug/blob/main/CHANGES.rst)
- [Commits](pallets/werkzeug@2.2.3...3.0.1)

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

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

Author: dependabot[bot]

backend/requirements/base.txt

@@ -53,5 +53,5 @@ tomli==2.0.1
 tzdata==2022.7
 uritemplate==4.1.1
 urllib3==1.26.18
-Werkzeug==2.2.3
+Werkzeug==3.0.1
 whitenoise==6.2.0