Update black requirement from ^20.8b1 to ^22.1

Updates the requirements on [black](https://github.com/psf/black) to permit the latest version.
- [Release notes](https://github.com/psf/black/releases)
- [Changelog](https://github.com/psf/black/blob/main/CHANGES.md)
- [Commits](psf/black@20.8b1...22.1.0)

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

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

pyproject.toml

@@ -32,7 +32,7 @@ lesscpy = "*"
 cssmin = "*"
 jsmin = "*"
 pytest = "*"
-black = "^20.8b1"
+black = "^22.1"
 isort = "*"
 flake8 = "^4.0.0"