[InterNetNews/inn] 523cbe: Reject articles arriving in a full newsgroup

[Julien ÉLIE]

  Branch: refs/heads/main
  Home:   https://github.com/InterNetNews/inn
  Commit: 523cbe2a0203c071c2fd874261b4368f4c3172c9
      https://github.com/InterNetNews/inn/commit/523cbe2a0203c071c2fd874261b4368f4c3172c9
  Author: Julien ÉLIE <Julien-Elie at users.noreply.github.com>
  Date:   2023-01-11 (Wed, 11 Jan 2023)

  Changed paths:
    M doc/pod/news.pod
    M innd/art.c

  Log Message:
  -----------
  Reject articles arriving in a full newsgroup

Check that article numbers correctly lie between 1 and 2147483647 (2^31-1).
Otherwise, bad things happen...

close #251