⬆️ Bump black from 21.10b0 to 21.11b1 (#142)

Bumps [black](https://github.com/psf/black) from 21.10b0 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>

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

dev-requirements.txt

@@ -4,7 +4,7 @@ codecov
 chardet==4.0.*
 Flask>=2.0,<3.0; python_version >= '3.6'
 requests>=2.26,<3.0; python_version >= '3.6'
-black==21.10b0; python_version >= '3.6'
+black==21.11b1; python_version >= '3.6'
 flake8==4.0.1; python_version >= '3.6'
 mypy==0.910; python_version >= '3.6'
 isort; python_version >= '3.6'