test-dgram-send-cb-quelches-error works with or without a network. Move
to `parallel` directory.
PR-URL: https://github.com/nodejs/node/pull/30545
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
