Update libp2p (#2101)

This is a little bit of a tip-of-the-iceberg PR. It houses a lot of code changes in the libp2p dependency. 

This needs a bit of thorough testing before merging. 

The primary code changes are:
- General libp2p dependency update
- Gossipsub refactor to shift compression into gossipsub providing performance improvements and improved API for handling compression



Co-authored-by: Paul Hauner <paul@paulhauner.com>

beacon_node/eth2_libp2p/src/rpc/mod.rs

@@ -190,7 +190,7 @@ where
         debug!(self.log, "Requesting new peer's metadata"; "peer_id" => %peer_id);
         let rpc_event = RPCSend::Request(RequestId::Behaviour, RPCRequest::MetaData(PhantomData));
         self.events.push(NetworkBehaviourAction::NotifyHandler {
-            peer_id: peer_id.clone(),
+            peer_id: *peer_id,
             handler: NotifyHandler::Any,
             event: rpc_event,
         });