Coretime: Use `Superuser` for sending the transact calls (#2793)

polkadot/runtime/parachains/src/coretime/mod.rs

@@ -244,7 +244,7 @@ impl<T: Config> OnNewSession<BlockNumberFor<T>> for Pallet<T> {
 
 fn mk_coretime_call(call: crate::coretime::CoretimeCalls) -> Instruction<()> {
 	Instruction::Transact {
-		origin_kind: OriginKind::Native,
+		origin_kind: OriginKind::Superuser,
 		require_weight_at_most: Weight::from_parts(1000000000, 200000),
 		call: BrokerRuntimePallets::Broker(call).encode().into(),
 	}