Upgrade jsonrpc to 0.18.0 (#9547)

* Upgrade jsonrpc to 0.18.0

I think this says all :P

* 🤦

* Fmt etc

* Fix tests

* Fix tests again...

* Better impl

* Revert "Tell dependabot to ignore jsonrpc-* updates (#9518)"

This reverts commit 6e0cd5587d.

substrate/test-utils/test-runner/src/client.rs

@@ -94,7 +94,8 @@ where
 		+ ApiExt<T::Block, StateBackend = <TFullBackend<T::Block> as Backend<T::Block>>::State>
 		+ GrandpaApi<T::Block>,
 	<T::Runtime as frame_system::Config>::Call: From<frame_system::Call<T::Runtime>>,
-	<<T as ChainInfo>::Block as BlockT>::Hash: FromStr,
+	<<T as ChainInfo>::Block as BlockT>::Hash: FromStr + Unpin,
+	<<T as ChainInfo>::Block as BlockT>::Header: Unpin,
 	<<<T as ChainInfo>::Block as BlockT>::Header as Header>::Number:
 		num_traits::cast::AsPrimitive<usize>,
 {