Address migration comments (#2910)

* Use workspace.[authors|edition]

* Add repository.workspace = true

* Upgrade dependencies to the polkadot-sdk versions

* Upgrade async-std version

* Update jsonrpsee version

* cargo update

* use ci-unified image

bridges/relays/lib-substrate-relay/Cargo.toml

@@ -1,9 +1,10 @@
 [package]
 name = "substrate-relay-helper"
 version = "0.1.0"
-authors = ["Parity Technologies <admin@parity.io>"]
-edition = "2021"
+authors.workspace = true
+edition.workspace = true
 license = "GPL-3.0-or-later WITH Classpath-exception-2.0"
+repository.workspace = true
 publish = false
 
 [lints]
@@ -13,7 +14,7 @@ workspace = true
 anyhow = "1.0"
 async-std = "1.9.0"
 async-trait = "0.1.79"
-codec = { package = "parity-scale-codec", version = "3.1.5" }
+codec = { package = "parity-scale-codec", version = "3.6.1" }
 futures = "0.3.30"
 hex = "0.4"
 log = { workspace = true }