quic: temporarily skip quic-ipv6only test

The dual stack support is currently broken as the QuicSocket endpoints
are not properly accounting for all cases. Needs to be investigated
further.

PR-URL: #34033
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Jiawen Geng <technicalcute@gmail.com>
Reviewed-By: Daniel Bevenius <daniel.bevenius@gmail.com>

test/parallel/test-quic-ipv6only.js

@@ -9,6 +9,9 @@ if (!common.hasIPv6)
 if (!common.hasQuic)
   common.skip('missing quic');
 
+common.skip(
+  'temporarily skip ipv6only check. dual stack support is current broken');
+
 const assert = require('assert');
 const { createQuicSocket } = require('net');
 const { key, cert, ca } = require('../common/quic');