Update node + c-ares - #485

c-ares 1.34.8 (upstream PR #1244) reverts the const-ified callback
parameters introduced in 1.34.7, which upstream deemed an unintended API
break: existing applications with the historical non-const callback
signatures no longer compiled, particularly in C++ where function
pointer types must match exactly. ares_host_callback is back to taking
`struct hostent *`, and upstream opted to document the read-only nature
of the parameter instead.

That makes the sed patch added in c3f3fdf produce exactly the mismatch it
was written to fix — node fails to build against the new shared c-ares
with:

  src/cares_wrap.cc:1740:21: error: no matches converting function
  'Callback' to type 'ares_host_callback'

Drop the patch (and its self-verifying grep guard) from both build.sh
files; the unpatched node source matches the reverted signature.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>