The following PR adds the volker-raschek/ah-annotations action. This action
reads the semantic commits between the old and new tags and uses them to
generate a changelog for ArtifactHub.
In addition, the action ensures that when pre-releases are created—for example,
v0.1.0-rc.1, v0.1.0-alpha-2, etc.—the “pre-release” annotation is added.
By default, Helm ignores pre-releases. If a user wants to install a pre-release,
they must explicitly specify this using an argument: `helm search repo gitea
--devel`.