Bump werkzeug from 3.0.6 to 3.1.5 in /examples/benchmark

Bumps [werkzeug](https://github.com/pallets/werkzeug) from 3.0.6 to 3.1.5.
- [Release notes](https://github.com/pallets/werkzeug/releases)
- [Changelog](https://github.com/pallets/werkzeug/blob/main/CHANGES.rst)
- [Commits](pallets/werkzeug@3.0.6...3.1.5)

---
updated-dependencies:
- dependency-name: werkzeug
  dependency-version: 3.1.5
  dependency-type: indirect
...

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

Author: dependabot[bot]

examples/benchmark/requirements.txt

@@ -100,7 +100,7 @@ urllib3==2.6.3
     # via requests
 uvicorn==0.24.0.post1
     # via -r requirements.in
-werkzeug==3.0.6
+werkzeug==3.1.5
     # via
     #   flask
     #   quart