Bump django-stubs from 1.9.0 to 5.0.4

Bumps [django-stubs](https://github.com/typeddjango/django-stubs) from 1.9.0 to 5.0.4.
- [Release notes](https://github.com/typeddjango/django-stubs/releases)
- [Commits](typeddjango/django-stubs@1.9.0...5.0.4)

---
updated-dependencies:
- dependency-name: django-stubs
  dependency-type: direct:development
  update-type: version-update:semver-major
...

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

pyproject.toml

@@ -31,7 +31,7 @@ whitenoise = "^6.6.0"
 black = "^23"
 django-debug-toolbar = "^4.2.0"
 django-pattern-library = "~1.1.0"
-django-stubs = "^1.9.0"
+django-stubs = "^5.0.4"
 djhtml = "~3.0.6"
 flake8 = "^6.1.0"
 isort = "^5.12.0"