We need the executable also when not using CI repos.

Build a dummy deb so we know the pipeline works

Just here to test the pipeline on itself

The debian package builds dumps stuff there and so it might
end up in cached containers.

We only need to update the packaging information if we added the
ci repo.

Builds not using our ci repos need those as well.

So we don't fail if they're missing.

Copy udebs as well

See merge request !2

Otherwise lintian chokes on missing files

Update submodule

See merge request !1

This is usually expected but can be turned off. Pipelines
that worked so far did so by accident (cached containers).

This makes it simpler to run it locally