fix: modify code when update role type of USER

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

src/spaceone/identity/service/workspace_group_user_service.py

@@ -245,7 +245,7 @@ def update_role(
         self.workspace_group_svc.check_role_type(role_type)
 
         self.workspace_group_svc.update_user_role_of_workspace_group(
-            role_id, role_type, user_id, workspace_group_id, domain_id
+            role_id, role_type, target_user_id, workspace_group_id, domain_id
         )
 
         update_workspace_group_params = {"users": workspace_group_vo.users or []}