Bump black from 23.10.1 to 23.12.1

Bumps [black](https://github.com/psf/black) from 23.10.1 to 23.12.1.
- [Release notes](https://github.com/psf/black/releases)
- [Changelog](https://github.com/psf/black/blob/main/CHANGES.md)
- [Commits](psf/black@23.10.1...23.12.1)

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

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

requirements/test_black.txt

@@ -4,4 +4,4 @@
 -r test.txt
 
 # Black for formatting
-black == 23.10.1
+black == 23.12.1