Reconfigure mypy

mypy.ini

@@ -1,7 +1,6 @@
 [mypy]
 python_version = 3.8
 disallow_subclassing_any = False
-disallow_untyped_calls = False
 disallow_untyped_decorators = False
 warn_unreachable = True
 local_partial_types = True
@@ -13,7 +12,8 @@ enable_error_code =
   truthy-iterable,
   ignore-without-code,
   unused-awaitable,
-  explicit-override
+  explicit-override,
+  unimported-reveal
 strict = True
 
 [mypy-aiohttp_socks.*]