message: fix gossip table test
diff: @@ -725,7 +725,7 @@ mod tests {
  let action = gossip_table.check_timeout(&data_id, node_ids[1]);
  let expected = GossipAction::ShouldGossip(ShouldGossip {
  count: 1,
  - exclude_peers: iter::once(node_ids[0]).collect(),
  + exclude_peers: node_ids[..=1].iter().copied().collect(),
  is_already_held: true,
  });
  assert_eq!(expected, action);
  