Bump werkzeug from 2.3.8 to 3.0.3 in /server

Bumps [werkzeug](https://github.com/pallets/werkzeug) from 2.3.8 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@2.3.8...3.0.3)

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

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

server/requirements.txt

@@ -172,7 +172,7 @@ webargs==8.3.0
     # via -r requirements.in
 webencodings==0.5.1
     # via html5lib
-werkzeug==2.3.8
+werkzeug==3.0.3
     # via
     #   flask
     #   flask-login