add patch endpoint and service update_task

src/repository/users.py

@@ -50,7 +50,11 @@ class UsersRepo(BaseRepo):
                 selectinload(
                     self.model.tasks.and_(TasksORM.id.in_(tasks_subquery))
                 ).load_only(
-                    TasksORM.id, TasksORM.title, TasksORM.due_date, TasksORM.priority, TasksORM.status
+                    TasksORM.id,
+                    TasksORM.title,
+                    TasksORM.due_date,
+                    TasksORM.priority,
+                    TasksORM.status,
                 )
             )
         )