Update dev requirements

requirements-dev.txt

 #
-# This file is autogenerated by pip-compile
+# This file is autogenerated by pip-compile with python 3.9
 # To update, run:
 #
 #    pip-compile requirements-dev.in
 #
-appdirs==1.4.4
-    # via black
-black==20.8b1
+black==21.12b0
     # via
     #   -r requirements-dev.in
     #   flake8-black
-click==7.1.2
+click==8.0.3
     # via black
-flake8-black==0.2.1
-    # via -r requirements-dev.in
-flake8==3.8.4
+flake8==4.0.1
     # via
     #   -r requirements-dev.in
     #   flake8-black
+flake8-black==0.2.3
+    # via -r requirements-dev.in
 mccabe==0.6.1
     # via flake8
+mypy==0.910
+    # via -r requirements-dev.in
 mypy-extensions==0.4.3
     # via
     #   black
     #   mypy
-mypy==0.800
-    # via -r requirements-dev.in
-pathspec==0.8.1
+pathspec==0.9.0
+    # via black
+platformdirs==2.4.0
     # via black
-pycodestyle==2.6.0
+pycodestyle==2.8.0
     # via flake8
-pyflakes==2.2.0
+pyflakes==2.4.0
     # via flake8
-regex==2020.11.13
-    # via black
 toml==0.10.2
-    # via black
-typed-ast==1.4.2
     # via
-    #   black
+    #   flake8-black
     #   mypy
-typing-extensions==3.7.4.3
+tomli==1.2.2
+    # via black
+typing-extensions==4.0.1
     # via
     #   black
     #   mypy