Bump black from 23.7.0 to 23.9.1 (#227)

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
...

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

Author: dependabot[bot]

poetry.lock

@@ -26,7 +26,7 @@ backoff = "<3"
 
 [tool.poetry.dev-dependencies]
 aresponses = "^2.1.6"
-black = "^23.7.0"
+black = "^23.9.1"
 isort = "^5.12.0"
 mypy = "^1.5"
 pdoc3 = "^0.10.0"