deps: upgrade to c-ares v1.15.0

Our out-of-tree patch from 2b6bb9f5 ("deps: c-ares float, win ipv6 bad
fec0 prefix") should no longer be necessary, c-ares now blacklists such
addresses itself.

PR-URL: https://github.com/nodejs/node/pull/23854


Reviewed-By: Refael Ackermann <refack@gmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>