Bump black from 21.11b0 to 21.11b1

Bumps [black](https://github.com/psf/black) from 21.11b0 to 21.11b1.
- [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] <support@github.com>

requirements-dev.txt

@@ -4,7 +4,7 @@ attrs==21.2.0
 Babel==2.9.1
 backports.entry-points-selectable==1.1.1
 beautifulsoup4==4.10.0
-black==21.11b0
+black==21.11b1
 bleach==4.1.0
 bump2version==1.0.1
 certifi==2021.10.8