chore: backport pre-commit changes from ap-backend

Part of https://gitlab.developers.cam.ac.uk/uis/devops/digital-admissions/admissions-portal/ap-backend/-/issues/345

Backport pre-commit configuration in ap-backend.

template/.gitlab/webapp.gitlab-ci.yml

@@ -22,7 +22,7 @@ python:tox:
     matrix:
       - PYTHON_VERSION: "3.11" # Make sure this matches the version in pyproject.toml and the Dockerfile.
   variables:
-    TOX_ADDITIONAL_REQUIREMENTS: "poetry>=1.7.1"
+    TOX_ADDITIONAL_REQUIREMENTS: "poetry>=1.8.2"
   rules:
     - !reference [build, rules]