message: Use next_era_id as well for seed
diff: @@ -1961,7 +1961,8 @@ where
  let gas_limit = Gas::new(U512::from(std::u64::MAX));
  let deploy_hash = {
  // seeds address generator w/ era_end_timestamp_millis
  - let bytes = step_request.era_end_timestamp_millis.into_bytes()?;
  + let mut bytes = step_request.era_end_timestamp_millis.into_bytes()?;
  + bytes.append(&mut step_request.next_era_id.into_bytes()?);
  DeployHash::new(Digest::hash(&bytes).value())
  };
  