rpc: bump jsonrpsee v0.22 and fix race in rpc v2 chain_head (#3230)

Close #2992 

Breaking changes:
- rpc server grafana metric `substrate_rpc_requests_started` is removed
(not possible to implement anymore)
- rpc server grafana metric `substrate_rpc_requests_finished` is removed
(not possible to implement anymore)
- rpc server ws ping/pong not ACK:ed within 30 seconds more than three
times then the connection will be closed

Added
- rpc server grafana metric `substrate_rpc_sessions_time` is added to
get the duration for each websocket session

substrate/client/rpc-spec-v2/src/chain_head/api.rs

@@ -26,7 +26,7 @@ use crate::{
 	},
 	common::events::StorageQuery,
 };
-use jsonrpsee::proc_macros::rpc;
+use jsonrpsee::{proc_macros::rpc, server::ResponsePayload};
 use sp_rpc::list::ListOrValue;
 
 #[rpc(client, server)]
@@ -59,7 +59,7 @@ pub trait ChainHeadApi<Hash> {
 		&self,
 		follow_subscription: String,
 		hash: Hash,
-	) -> Result<MethodResponse, Error>;
+	) -> ResponsePayload<'static, MethodResponse>;
 
 	/// Retrieves the header of a pinned block.
 	///
@@ -92,7 +92,7 @@ pub trait ChainHeadApi<Hash> {
 		hash: Hash,
 		items: Vec<StorageQuery<String>>,
 		child_trie: Option<String>,
-	) -> Result<MethodResponse, Error>;
+	) -> ResponsePayload<'static, MethodResponse>;
 
 	/// Call into the Runtime API at a specified block's state.
 	///
@@ -106,7 +106,7 @@ pub trait ChainHeadApi<Hash> {
 		hash: Hash,
 		function: String,
 		call_parameters: String,
-	) -> Result<MethodResponse, Error>;
+	) -> ResponsePayload<'static, MethodResponse>;
 
 	/// Unpin a block or multiple blocks reported by the `follow` method.
 	///