feat: update utp-rs dependency

[morph-dev]

What was wrong?

It's possible for wrong Enr to be passed to utp library if it was changed recently.
See #1596 for more details.

How was it fixed?

The utp-rs library is updated (see ethereum/utp#136) so only peer id (NodeId) is required when receiving the utp packet, while entire peer (Enr) is passed when calling accept_with_cid.

The biggest change is in crates/portalnet/src/discovery.rs, where we now call find_enr only if Enr is unknown when we have to send them packet (which should rarely happen), instead of every time we receive packet.

Worth highlighting that due to the nature of #1596, we can't easily verify that this actually fixes it until it's deployed to the servers. I did some manual testing and I'm confident that this should fix it (but I plan to verify once this is merged and deployed).

To-Do

• Update dependency to utp repo once feat!: distinguish peer and peer_id on api level utp#136 is merged