Accommodate all flake versions

Author: bluetech

src/_pytest/main.py

@@ -498,7 +498,7 @@ def perform_collect(
     ) -> Sequence[nodes.Item]:
         raise NotImplementedError()
 
-    @overload
+    @overload  # noqa: F811
     def perform_collect(  # noqa: F811
         self, args: Optional[Sequence[str]] = ..., genitems: bool = ...
     ) -> Sequence[Union[nodes.Item, nodes.Collector]]:
@@ -525,7 +525,7 @@ def _perform_collect(
     ) -> Sequence[nodes.Item]:
         raise NotImplementedError()
 
-    @overload
+    @overload  # noqa: F811
     def _perform_collect(  # noqa: F811
         self, args: Optional[Sequence[str]], genitems: bool
     ) -> Sequence[Union[nodes.Item, nodes.Collector]]: