fix: 3.8 hint

Author: msto

fgpyo/util/inspect.py

@@ -73,8 +73,9 @@ def get_attr_fields_dict(cls: type) -> Dict[str, dataclasses.Field]:  # type: ig
 else:
 
     # https://github.com/python/typeshed/blob/727f3c4320d2af3af2f16695e24dd78e79b7c070/stdlib/_typeshed/__init__.pyi#L348
+    # TODO: update the hint to `Field[Any]` when we drop support for 3.8
     class DataclassInstance(Protocol):
-        __dataclasses_fields__: ClassVar[Dict[str, dataclasses.Field[Any]]]
+        __dataclasses_fields__: ClassVar[Dict[str, dataclasses.Field]]
 
 
 if TYPE_CHECKING and _use_attr:  # pragma: no cover