Update black to latest stable in both pre-commit and pyproject.toml

Author: necaris

.pre-commit-config.yaml

@@ -19,6 +19,6 @@ repos:
       - id: mypy
         args: [--ignore-missing-imports, --no-strict-optional]
   - repo: https://github.com/python/black
-    rev: stable
+    rev: 20.8b1
     hooks:
       - id: black

graphene_pydantic/converters.py

@@ -262,15 +262,19 @@ def convert_generic_python_type(
         return convert_union_type(
             type_, field, registry, parent_type=parent_type, model=model
         )
-    elif origin in (
-        T.Tuple,
-        T.List,
-        T.Set,
-        T.Collection,
-        T.Iterable,
-        list,
-        set,
-    ) or issubclass(origin, collections.abc.Sequence):
+    elif (
+        origin
+        in (
+            T.Tuple,
+            T.List,
+            T.Set,
+            T.Collection,
+            T.Iterable,
+            list,
+            set,
+        )
+        or issubclass(origin, collections.abc.Sequence)
+    ):
         # TODO: find a better way of divining that the origin is sequence-like
         inner_types = getattr(type_, "__args__", [])
         if not inner_types:  # pragma: no cover  # this really should be impossible

pyproject.toml

@@ -29,7 +29,7 @@ pytest = "~4.6.4"
 pytest-cov = "~2.7.1"
 tox = "~3.12.0"  # sync with tox.ini
 mypy = "0.720"
-black = "19.3b0"
+black = "20.8b1"
 pre-commit = "~1.17.0"
 tox-gh-actions = "^1.3.0"