Bump debhelper from old 12 to 13.
Changes-By: lintian-brush Fixes: lintian: package-uses-old-debhelper-compat-version See-also: https://lintian.debian.org/tags/package-uses-old-debhelper-compat-version.html
Found errors in your .gitlab-ci.yml:
- Included file `https://git.autistici.org/ai3/build-deb/raw/master/ci-buster-backports.yml` does not have valid YAML syntax!