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/client/rpc-api/Cargo.toml

@@ -15,11 +15,11 @@ targets = ["x86_64-unknown-linux-gnu"]
 [dependencies]
 codec = { package = "parity-scale-codec", version = "2.0.0" }
 derive_more = "0.99.2"
-futures = { version = "0.3.1", features = ["compat"] }
-jsonrpc-core = "15.1.0"
-jsonrpc-core-client = "15.1.0"
-jsonrpc-derive = "15.1.0"
-jsonrpc-pubsub = "15.1.0"
+futures = "0.3.16"
+jsonrpc-core = "18.0.0"
+jsonrpc-core-client = "18.0.0"
+jsonrpc-derive = "18.0.0"
+jsonrpc-pubsub = "18.0.0"
 log = "0.4.8"
 parking_lot = "0.11.1"
 sp-core = { version = "4.0.0-dev", path = "../../primitives/core" }