Bump black from 23.7.0 to 23.9.1

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](psf/black@23.7.0...23.9.1)

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

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

Author: dependabot[bot]

poetry.lock

@@ -69,7 +69,7 @@ pytest-cov = "^4.1.0"
 tox = "*"
 mypy = "^1.5"
 isort = "^5.11.5"
-black = "^23.7.0"
+black = "^23.9.1"
 flynt = "^1.0"
 deptry = "^0.12.0"