Replaced legacy Union[] with new syntax

modules/utils_sync.py

@@ -1,9 +1,7 @@
-from typing import Union
-
 from discord import Member, User
 
 
-def guild_name(member: Union[Member, User]) -> str:
+def guild_name(member: Member | User) -> str:
     if isinstance(member, User):
         return member.name