[Enum] EnumMeta.__prepare__ now accepts **kwds (#23917)

diff --git a/Lib/enum.py b/Lib/enum.py
index 0070ebe..36a9a40 100644
--- a/Lib/enum.py
+++ b/Lib/enum.py
@@ -178,7 +178,7 @@ class EnumMeta(type):
     Metaclass for Enum
     """
     @classmethod
-    def __prepare__(metacls, cls, bases):
+    def __prepare__(metacls, cls, bases, **kwds):
         # check that previous enum members do not exist
         metacls._check_for_existing_members(cls, bases)
         # create the namespace dict