Merge pull request #39 from redis/dependabot/pip/black-21.12b0

Bump black from 21.11b1 to 21.12b0

Author: Simon Prickett

poetry.lock

@@ -42,7 +42,7 @@ mypy = "^0.910"
 pytest = "^6.2.4"
 ipdb = "^0.13.9"
 pylint = "^2.11.1"
-black = "^21.11b1"
+black = "^21.12b0"
 isort = "^5.9.3"
 flake8 = "^4.0.1"
 bandit = "^1.7.1"