Adjust expected test output for improved rpm-sequoia lints

[dmnks]

Ok, it's now failing as follows:

  --- -	2026-03-25 10:52:48.849416757 +0000
  +++ /srv/rpmtests.dir/at-groups/102/stderr	2026-03-25 10:52:48.847590623 +0000
  @@ -1,3 +1,3 @@
   error: Certificate 7F1C21F95F65BBE8:
  -  Policy rejects 7F1C21F95F65BBE8: Policy rejected asymmetric algorithm
  +  Policy rejects 7F1C21F95F65BBE8: Policy rejected asymmetric algorithm, because NistP256 is not considered secure

This is expected as this PR changes the output. Since the test is part of RPM, RPM will need to somehow adjust this (cc: @pmatilai, @dmnks)

Originally posted by @nwalfield in rpm-software-management/rpm-sequoia#111 (comment)