Bump werkzeug in /circleci/images/pgupgradetester/files/etc

Bumps [werkzeug](https://github.com/pallets/werkzeug) from 3.1.4 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@3.1.4...3.1.5)

---
updated-dependencies:
- dependency-name: werkzeug
  dependency-version: 3.1.5
  dependency-type: direct:production
...

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

Author: dependabot[bot]

circleci/images/pgupgradetester/files/etc/requirements.txt

@@ -60,6 +60,6 @@ tornado==6.5.2; python_version >= '3.9'
 typing-extensions==4.14.0; python_version >= '3.9'
 urwid==3.0.3; python_full_version >= '3.9.0'
 wcwidth==0.2.14; python_version >= '3.6'
-werkzeug==3.1.4; python_version >= '3.9'
+werkzeug==3.1.5; python_version >= '3.9'
 wsproto==1.2.0; python_full_version >= '3.7.0'
 zstandard==0.25.0; python_version >= '3.9'