Don't emit latest-debian-changelog-entry-without-new-version for uploads to...

Don't emit latest-debian-changelog-entry-without-new-version for uploads to (eg.) buster-security to avoid false-positives when performing "no-change" uploads with a ~debXuY suffix.
4 jobs for master in 92 minutes and 35 seconds (queued for 2 seconds)
Status Job ID Name Coverage
  Test
passed #210551
stable-bpo

01:32:34

passed #210550
testing

01:19:06

passed #210549
unstable

01:21:21

 
  External
passed jenkins

00:20:04