Validate encoding of extrinsics passed to runtime (#6442)

* Validate encoding of extrinsics passed to runtime

* Bump codec version explicitly

Author: arkpar

Cargo.toml

@@ -12,7 +12,7 @@ description = "Consensus extension module for BABE consensus. Collects on-chain
 targets = ["x86_64-unknown-linux-gnu"]
 
 [dependencies]
-codec = { package = "parity-scale-codec", version = "1.3.0", default-features = false, features = ["derive"] }
+codec = { package = "parity-scale-codec", version = "1.3.1", default-features = false, features = ["derive"] }
 serde = { version = "1.0.101", optional = true }
 sp-inherents = { version = "2.0.0-rc3", default-features = false, path = "../../primitives/inherents" }
 sp-application-crypto = { version = "2.0.0-rc3", default-features = false, path = "../../primitives/application-crypto" }