Bump black from 21.9b0 to 21.10b0 (#54)

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]>

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

Author: dependabot[bot]

poetry.lock

@@ -11,7 +11,7 @@ pyspark = "3.1.1"
 
 [tool.poetry.dev-dependencies]
 pytest = "^6.2.4"
-black = "^21.9b0"
+black = "^21.10b0"
 isort = "^5.8.0"
 flake8 = "^4.0.1"
 coverage = "^6.0"