Upgrade Polkadot-v1.6.0

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

pallets/certification/src/benchmarking.rs

@@ -87,7 +87,7 @@ mod benchmarks {
         let receiver: T::IdtyIndex = 2.into();
         // try to add cert if missing, else ignore
         // this depends on initial data
-        Pallet::<T>::do_add_cert_checked(issuer, receiver, false)?;
+        let _ = Pallet::<T>::do_add_cert_checked(issuer, receiver, false);
 
         #[extrinsic_call]
         _(RawOrigin::Root, issuer, receiver);