Upgrade Polkadot-v1.6.0

• benchmarking v1 to v2.
• Replace GenesisBuilder.
• Upgrade cucumber cli.
• Upgrade workspace.

pallets/identity/src/benchmarking.rs

@@ -18,7 +18,6 @@
 
 use super::*;
 
-//use codec::Encode;
 use codec::Encode;
 use frame_benchmarking::account;
 use frame_benchmarking::v2::*;
@@ -33,7 +32,6 @@ use crate::Pallet;
 
 #[benchmarks(
         where
-            T::Signature: From<sp_core::sr25519::Signature>,
             T::Signature: From<sp_core::sr25519::Signature>,
             T::AccountId: From<AccountId32>,
             T::IdtyIndex: From<u32>,