chore(deps): update black requirement from ==24.4.* to ==24.8.* (#428)

Updates the requirements on [black](https://github.com/psf/black) to permit the latest version.
- [Release notes](https://github.com/psf/black/releases)
- [Changelog](https://github.com/psf/black/blob/main/CHANGES.md)
- [Commits](psf/black@24.4.0...24.8.0)

---
updated-dependencies:
- dependency-name: black
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

requirements-testing.txt

@@ -9,7 +9,7 @@ freezegun == 1.*
 types-pyyaml == 6.*
 twine == 4.*; python_version == '3.7'
 twine == 5.*; python_version > '3.7'
-black == 24.4.*; python_version > '3.7'
+black == 24.8.*; python_version > '3.7'
 mypy == 1.11.*; python_version == '3.7'
 mypy == 1.*; python_version > '3.7'
 ruff == 0.5.*