Bumps black to v21.12b0

Author: HorlogeSkynet

.pre-commit-config.yaml

@@ -1,9 +1,10 @@
 repos:
   - repo: https://github.com/psf/black
-    rev: 21.6b0
+    rev: 21.12b0
     hooks:
       - id: black
         args: ["--target-version", "py27"]
+        additional_dependencies: ["click==7.1.2"]
   - repo: https://github.com/PyCQA/flake8
     rev: 3.9.2
     hooks:

dev-requirements.txt

@@ -3,4 +3,5 @@ pytest-cov
 sphinx>=1.1
 pre-commit==2.13.0; python_version > '3.5'
 black; python_version > '3.5' and platform_python_implementation != 'PyPy'
+click==7.1.2
 mypy; python_version > '3.5' and platform_python_implementation != 'PyPy'