update libp2p dependency to upstream (#8200)

Co-Authored-By: João Oliveira <hello@jxs.pt>

beacon_node/lighthouse_network/src/config.rs

@@ -5,7 +5,7 @@ use crate::{Enr, PeerIdSerialized};
 use directory::{
     DEFAULT_BEACON_NODE_DIR, DEFAULT_HARDCODED_NETWORK, DEFAULT_NETWORK_DIR, DEFAULT_ROOT_DIR,
 };
-use libp2p::Multiaddr;
+use libp2p::{Multiaddr, gossipsub};
 use local_ip_address::local_ipv6;
 use network_utils::listen_addr::{ListenAddr, ListenAddress};
 use serde::{Deserialize, Serialize};