Bump black from 21.9b0 to 21.10b0

Bumps [black](https://github.com/psf/black) from 21.9b0 to 21.10b0.
- [Release notes](https://github.com/psf/black/releases)
- [Changelog](https://github.com/psf/black/blob/main/CHANGES.md)
- [Commits](https://github.com/psf/black/commits)

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

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

Author: dependabot[bot]

poetry.lock

@@ -31,7 +31,7 @@ mypy = "^0.910"
 pytest = "^6.2.4"
 ipdb = "^0.13.9"
 pylint = "^2.11.1"
-black = "^21.9b0"
+black = "^21.10b0"
 isort = "^5.9.3"
 flake8 = "^4.0.1"
 bandit = "^1.7.0"