Upgrading parity-scale-codec to v3 (#10825)

* Upgraded dependencies

* Adapting code to scale v3

* Empty commit to trigger CI

* Triggering CI

* Fixing UI test

* Remove superfluous dev-dep added by #9228

* Cryout for CI

substrate/utils/frame/try-runtime/cli/Cargo.toml

@@ -15,7 +15,7 @@ targets = ["x86_64-unknown-linux-gnu"]
 [dependencies]
 clap = { version = "3.0", features = ["derive"] }
 log = "0.4.8"
-parity-scale-codec = { version = "2.3.1" }
+parity-scale-codec = "3.0.0"
 serde = "1.0.136"
 zstd = "0.9.0"