Add missing types for two permissions in PermissionOverwrite

discord/permissions.py

@@ -688,6 +688,8 @@ class PermissionOverwrite:
         send_messages_in_threads: Optional[bool]
         external_stickers: Optional[bool]
         use_external_stickers: Optional[bool]
+        use_embedded_activities: Optional[bool]
+        moderate_members: Optional[bool]
 
     def __init__(self, **kwargs: Optional[bool]):
         self._values: Dict[str, Optional[bool]] = {}