Update mypy to 0.910

Author: hramezani

tox.ini

@@ -53,7 +53,7 @@ commands =
 extras =
 deps =
     flake8
-    mypy==0.812
+    mypy==0.910
 commands =
     flake8 --version
     flake8 --statistics {posargs:pytest_django pytest_django_test tests}