Enable flake8-pyi's Y037 (#9686)

stdlib/marshal.pyi

@@ -1,31 +1,31 @@
 import builtins
 import types
 from _typeshed import ReadableBuffer, SupportsRead, SupportsWrite
-from typing import Any, Union
+from typing import Any
 from typing_extensions import TypeAlias
 
 version: int
 
-_Marshallable: TypeAlias = Union[
+_Marshallable: TypeAlias = (
     # handled in w_object() in marshal.c
-    None,
-    type[StopIteration],
-    builtins.ellipsis,
-    bool,
+    None
+    | type[StopIteration]
+    | builtins.ellipsis
+    | bool
     # handled in w_complex_object() in marshal.c
-    int,
-    float,
-    complex,
-    bytes,
-    str,
-    tuple[_Marshallable, ...],
-    list[Any],
-    dict[Any, Any],
-    set[Any],
-    frozenset[_Marshallable],
-    types.CodeType,
-    ReadableBuffer,
-]
+    | int
+    | float
+    | complex
+    | bytes
+    | str
+    | tuple[_Marshallable, ...]
+    | list[Any]
+    | dict[Any, Any]
+    | set[Any]
+    | frozenset[_Marshallable]
+    | types.CodeType
+    | ReadableBuffer
+)
 
 def dump(__value: _Marshallable, __file: SupportsWrite[bytes], __version: int = 4) -> None: ...
 def load(__file: SupportsRead[bytes]) -> Any: ...