Bump black from 23.7.0 to 23.9.1 (#2873)

Bumps [black](https://github.com/psf/black) from 23.7.0 to 23.9.1.
- [Release notes](https://github.com/psf/black/releases)
- [Changelog](https://github.com/psf/black/blob/main/CHANGES.md)
- [Commits](https://github.com/psf/black/compare/23.7.0...23.9.1)

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

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

requirements.txt

@@ -19,7 +19,7 @@ build==0.10.0
 twine==4.0.2
 
 # Tests & Linting
-black==23.7.0
+black==23.9.1
 coverage[toml]==7.3.0
 cryptography==41.0.4
 mypy==1.5.1