Bump black from 21.6b0 to 21.7b0 (#1371)
Bump black from 21.6b0 to 21.7b0 (#1371)

Bumps [black](https://github.com/psf/black) from 21.6b0 to 21.7b0.
- [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] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@github.com>

Co-authored-by: dependabot[bot] <1c358da00a777d4e9898c1280ab801e2df165188@users.noreply.github.com>
pajlada/tyggbot,pajlada/tyggbot,pajlada/pajbot,pajlada/tyggbot,pajlada/tyggbot,pajlada/pajbot,pajlada/pajbot,pajlada/pajbot