Update Substrate/Polkadot/Cumulus references (#1364)

cumulus: b468d0c33e
polkadot: 827792ca833396c82c726eda0bc2ad32ecddba73
substrate: 666f39b8a22108f57732215de006518738034ba2

bump serde_json to 1.0.79

sync changes from https://github.com/paritytech/substrate/pull/11022

fixed clippy warnings

Signed-off-by: acatangiu <adrian@parity.io>

bridges/relays/bin-substrate/src/cli/relay_headers_and_messages.rs

@@ -330,9 +330,9 @@ impl RelayHeadersAndMessages {
 					LeftToRightMessageLane,
 					Left,
 				>(
-					left_client.clone(),
+					left_client,
 					TransactionParams {
-						signer: left_messages_pallet_owner.clone(),
+						signer: left_messages_pallet_owner,
 						mortality: left_transactions_mortality,
 					},
 					left_to_right_metrics
@@ -366,9 +366,9 @@ impl RelayHeadersAndMessages {
 					RightToLeftMessageLane,
 					Right,
 				>(
-					right_client.clone(),
+					right_client,
 					TransactionParams {
-						signer: right_messages_pallet_owner.clone(),
+						signer: right_messages_pallet_owner,
 						mortality: right_transactions_mortality,
 					},
 					right_to_left_metrics

bridges/relays/bin-substrate/src/cli/swap_tokens.rs

@@ -221,7 +221,7 @@ impl SwapTokens {
 					_,
 				>(
 					&source_client,
-					target_to_source_conversion_rate_override.clone(),
+					target_to_source_conversion_rate_override,
 					ESTIMATE_SOURCE_TO_TARGET_MESSAGE_FEE_METHOD,
 					SOURCE_TO_TARGET_LANE_ID,
 					bp_message_dispatch::MessagePayload {
@@ -384,7 +384,7 @@ impl SwapTokens {
 						_,
 					>(
 						&target_client,
-						source_to_target_conversion_rate_override.clone(),
+						source_to_target_conversion_rate_override,
 						ESTIMATE_TARGET_TO_SOURCE_MESSAGE_FEE_METHOD,
 						TARGET_TO_SOURCE_LANE_ID,
 						claim_swap_message.clone(),

bridges/relays/client-substrate/src/chain.rs

@@ -151,6 +151,7 @@ impl<C: Chain> UnsignedTransaction<C> {
 	}
 
 	/// Set transaction tip.
+	#[must_use]
 	pub fn tip(mut self, tip: C::Balance) -> Self {
 		self.tip = tip;
 		self

bridges/relays/utils/src/metrics.rs

@@ -105,6 +105,7 @@ impl MetricsParams {
 	}
 
 	/// Do not expose metrics.
+	#[must_use]
 	pub fn disable(mut self) -> Self {
 		self.address = None;
 		self

bridges/relays/utils/src/relay_loop.rs

@@ -85,6 +85,7 @@ pub struct LoopMetrics<SC, TC, LM> {
 
 impl<SC, TC, LM> Loop<SC, TC, LM> {
 	/// Customize delay between reconnect attempts.
+	#[must_use]
 	pub fn reconnect_delay(mut self, reconnect_delay: Duration) -> Self {
 		self.reconnect_delay = reconnect_delay;
 		self