Draft: Update for compatibility with Trixie

Update for compatibility with Trixie:

• ci-license-scan: Remove non ascii chars from debian override.
• apertis-pkg-merge-upstream-to-downstreams: Don't print useless information while canceling pipelines.
• apertis-pkg-merge-upstream-to-downstreams: ensure merge request is created against the right project.
• ci-buildpackage: drop the use of wrap-and-sort.
• Make sure the returned value of an executed sh is still a RunningCommand object.