GHSA-CQFX-GF56-8X59 libp2p-rendezvous: Unlimited namespace registrations per peer enables OOM DoS on rendezvous servers

Summary found that libp2p-rendezvous server has no limit on how many namespaces a single peer can register. a malicious peer can just keep registering unique namespaces in a loop and the server happily accepts every single one allocating memory for each registration with no pushback. keep doing...