fix(mkpkglists): fix tuple return for non-mysql

Signed-off-by: Kevin Morris <kevr@0cost.org>

aurweb/scripts/mkpkglists.py

@@ -31,7 +31,7 @@ users_state = state_path(userfile)
 
 def should_update(state: str, tablename: str) -> Tuple[bool, int]:
     if aurweb.config.get("database", "backend") != "mysql":
-        return False
+        return (False, 0)
 
     db_name = aurweb.config.get("database", "name")
     conn = aurweb.db.Connection()