Update from debian/trixie for apertis/v2026dev0

@wlozano it seems apertis-pkg-merge-upstream-to-downstreams is not smart enough to deal with multiple namespaces. When importing the new version of debhelper from Trixie, it created a merge request against pkg/debhelper (pkg/debhelper!38 (closed)) instead of pkg-rebase-trixie/debhelper.