Bring back runtime upgrade test (#525)

This brings back the runtime upgrade test and also updates Substrate &
Polkadot.

test/service/src/lib.rs

@@ -669,7 +669,7 @@ impl TestNode {
 
 	/// Register a parachain at this relay chain.
 	pub async fn schedule_upgrade(&self, validation: Vec<u8>) -> Result<(), RpcTransactionError> {
-		let call = frame_system::Call::set_code_without_checks(validation);
+		let call = frame_system::Call::set_code(validation);
 
 		self.send_extrinsic(
 			runtime::SudoCall::sudo_unchecked_weight(Box::new(call.into()), 1_000),