chore(audit): ignore hickory-proto advisories (#4332) (#4374)

- RUSTSEC-2026-0118: NSEC3 loop, only reachable via libp2p-mdns which is not compiled (mdns feature off)
- RUSTSEC-2026-0119: O(n^2) name compression on encode, libp2p-dns does one-name lookups

(cherry picked from commit ff7ad05)

Author: sveitser

.cargo/audit.toml

@@ -15,4 +15,10 @@ ignore = [
     "RUSTSEC-2025-0009",
     # Still here because of `ark-relations` crate.
     "RUSTSEC-2025-0055",
+    # hickory-proto NSEC3 loop. Only reachable via libp2p-mdns; mdns feature is not enabled in our
+    # libp2p config, so not compiled in.
+    "RUSTSEC-2026-0118",
+    # hickory-proto O(n^2) name compression on encode. libp2p does lookups one name at a time, not
+    # vulnerable, no patch release in libp2p available yet
+    "RUSTSEC-2026-0119",
 ]