Bump django-dynamic-preferences from 1.11.0 to 1.12.0

Bumps [django-dynamic-preferences](https://github.com/agateblue/django-dynamic-preferences) from 1.11.0 to 1.12.0.
- [Release notes](https://github.com/agateblue/django-dynamic-preferences/releases)
- [Changelog](https://github.com/agateblue/django-dynamic-preferences/blob/develop/HISTORY.rst)
- [Commits](agateblue/django-dynamic-preferences@1.11.0...1.12.0)

---
updated-dependencies:
- dependency-name: django-dynamic-preferences
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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