Bump black from 25.11.0 to 25.12.0

Bumps [black](https://github.com/psf/black) from 25.11.0 to 25.12.0.
- [Release notes](https://github.com/psf/black/releases)
- [Changelog](https://github.com/psf/black/blob/main/CHANGES.md)
- [Commits](psf/black@25.11.0...25.12.0)

---
updated-dependencies:
- dependency-name: black
  dependency-version: 25.12.0
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

poetry.lock

@@ -14,7 +14,7 @@ python = "^3.11"
 python-decouple = "^3.8"
 
 [tool.poetry.dev-dependencies]
-black = "^25.11"
+black = "^25.12"
 bpython = "^0.26"
 django-debug-toolbar = "^6.1.0"
 django-stubs = "^4.2.4"