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/consensus/pow/Cargo.toml

@@ -25,7 +25,7 @@ sp-consensus-pow = { version = "0.10.0-dev", path = "../../../primitives/consens
 sp-consensus = { version = "0.10.0-dev", path = "../../../primitives/consensus/common" }
 sc-consensus = { version = "0.10.0-dev", path = "../../../client/consensus/common" }
 log = "0.4.8"
-futures = { version = "0.3.1", features = ["compat"] }
+futures = "0.3.16"
 futures-timer = "3.0.1"
 parking_lot = "0.11.1"
 derive_more = "0.99.2"