chore(deps-dev): bump black in /backend/requirements

Bumps [black](https://github.com/psf/black) from 24.1.1 to 24.4.2.
- [Release notes](https://github.com/psf/black/releases)
- [Changelog](https://github.com/psf/black/blob/main/CHANGES.md)
- [Commits](psf/black@24.1.1...24.4.2)

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

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

backend/requirements/development.txt

@@ -16,7 +16,7 @@ pytest-sugar==1.0.0  # https://github.com/Frozenball/pytest-sugar
 flake8==7.0.0  # https://github.com/PyCQA/flake8
 flake8-isort==6.1.1  # https://github.com/gforcada/flake8-isort
 coverage==7.4.4  # https://github.com/nedbat/coveragepy
-black==24.1.1  # https://github.com/psf/black
+black==24.4.2  # https://github.com/psf/black
 pylint-django==2.5.5  # https://github.com/PyCQA/pylint-django
 pylint-celery==0.3  # https://github.com/PyCQA/pylint-celery
 pre-commit==3.7.0  # https://github.com/pre-commit/pre-commit