test: fix test-dns-idna2008

The DNS server will sometimes return an IPv6 address (as seen in nightly
CI from time to time). Use `family` option to force IPv4.

PR-URL: https://github.com/nodejs/node/pull/33367


Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>