⬆️ Bump black from 23.7.0 to 23.9.1 (#698)

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

pyproject.toml

@@ -20,7 +20,7 @@ chevron = "^0.14.0"
 "proxy.py" = { version = "^2.4.3", optional = true }
 
 [tool.poetry.dev-dependencies]
-black = "^23.7"
+black = "^23.9"
 flake8 = "^5.0.4"
 
 [tool.poetry.extras]