chore: bump black to 19.10b0 and mypy to 0.770 (#9378)

* Bump black to 19.10b0

* Upgrade mypy to 0.770

* Update how inline type is defined

tests/db_engine_specs/presto_tests.py

@@ -32,7 +32,7 @@ class PrestoTests(DbEngineSpecTestCase):
         self.assertEqual("STRING", PrestoEngineSpec.get_datatype("string"))
 
     def test_presto_get_view_names_return_empty_list(
-        self
+        self,
     ):  # pylint: disable=invalid-name
         self.assertEqual(
             [], PrestoEngineSpec.get_view_names(mock.ANY, mock.ANY, mock.ANY)