feat(mypy): disallow_any_generics

Author: lukasrothenberger

mypy.ini

@@ -25,9 +25,9 @@ disallow_untyped_decorators = True
 no_implicit_reexport = True
 no_implicit_optional = True
 strict_equality = True
+disallow_any_generics = True
 
 # the following options should be enabled one by one, then we will switch to `strict` type checking:
-#disallow_any_generics = True
 #disallow_untyped_calls = True
 #disallow_untyped_defs = True
 #disallow_incomplete_defs = True