Upgrade black (#505)

Author: hauntsaninja

.github/workflows/black.yaml

@@ -21,5 +21,5 @@ jobs:
 
       - name: Black Code Formatter
         run: |
-          pip install black==22.1.0
+          pip install black==22.3.0
           black -S --diff --check msgpack/ test/ setup.py

requirements.txt

@@ -2,4 +2,4 @@
 Cython~=0.29.13
 
 # dev only tools. no need to add pyproject
-black==22.1.0
+black==22.3.0