Fix stubtest for py312b3 (#10343)

stdlib/enum.pyi

@@ -4,7 +4,7 @@ import types
 from _typeshed import SupportsKeysAndGetItem, Unused
 from abc import ABCMeta
 from builtins import property as _builtins_property
-from collections.abc import Iterable, Iterator, Mapping
+from collections.abc import Callable, Iterable, Iterator, Mapping
 from typing import Any, Generic, TypeVar, overload
 from typing_extensions import Literal, Self, TypeAlias
 
@@ -34,6 +34,9 @@ if sys.version_info >= (3, 11):
         "verify",
     ]
 
+if sys.version_info >= (3, 12):
+    __all__ += ["pickle_by_enum_name", "pickle_by_global_name"]
+
 _EnumMemberT = TypeVar("_EnumMemberT")
 _EnumerationT = TypeVar("_EnumerationT", bound=type[Enum])
 
@@ -289,3 +292,7 @@ class auto(IntFlag):
     @_magic_enum_attr
     def value(self) -> Any: ...
     def __new__(cls) -> Self: ...
+
+if sys.version_info >= (3, 12):
+    def pickle_by_global_name(self: Enum, proto: int) -> str: ...
+    def pickle_by_enum_name(self: _EnumMemberT, proto: int) -> tuple[Callable[..., Any], tuple[type[_EnumMemberT], str]]: ...