fix: change to SON object from dict type when role type is a USER type

Signed-off-by: Youngjin Jo <[email protected]>

Author: yjinjo

src/spaceone/identity/service/workspace_group_service.py

@@ -588,7 +588,7 @@ def update_user_info(
                 user_id = user.get("user_id", "")
             else:
                 user_id = getattr(user, "user_id", "") or ""
-                user = user.to_mongo().to_dict()
+                user = user.to_mongo()
 
             user_info = user_info_dict.get(user_id, {})