libarchive: Make test_read_append_filter_wrong_program pass again
libarchive: Apply upstream commit a1b7bf8013fb7a11a486794247daae592db6f5ae
This fixes the failing test_read_append_filter_wrong_program test in CI
which has been failing since 01-Dec-2020.
Silence stderr in test_read_append_filter_program When the FreeBSD testsuite runs the libarchive tests it checks that stderr is empty. Since #1382 this is no longer the case. This change restores the behaviour of silencing bunzip2 stderr but doesn't bring back the output text check. Partially reverts 2e7aa5d9
MFC after: 3 days
Differential Revision: https://reviews.freebsd.org/D29036