feature request: custom relesae-comments

Thanks for stopping by to let us know something could be better!

**Is your feature request related to a problem?
It's not a problem, however it would be great, if you would be able to change the release-comment.
Additionally, if users are able to change it, the release-pipeline would look way more personal.
**Describe the solution you'd like**
So, my idea would be to set a config flag (for an example: release-comment(-footer / header) ) Then this will be used instead of this:
🤖 Created releases:

🌻
**Describe alternatives you've considered**
I have not considered any alternatives.