Add changelog to release for CI component itself
Problem
Currently, Releases don't have any changelog entries.
Proposed solution
Similar to https://gitlab.com/gitlab-org/components/gem-release/-/blob/4c81249bb8de7c36bf1130d4cb29d91ae17b22bd/templates/gem-release/template.yml#L163 we should add changelog entries.
Edited by Peter Leitzen