Update black requirement from ~=23.7 to ~=23.9

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@23.7.0...23.9.1)

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

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

Author: dependabot[bot]

lint-requirements.txt

@@ -1,3 +1,3 @@
 flake8-bugbear<23.8
-black~=23.7
+black~=23.9
 codespell