Update changelog generator configuration
What does this MR do?
https://gitlab.com/gitlab-org/quality/team-tasks/-/issues/1046 brought some updates in the labels that we're using to describe our Merge Requests.
This MR updates the changelog configuration file to reflect these changes.
Why was this MR needed?
What's the best way to test this MR?
What are the relevant issue numbers?
Edited by Tomasz Maczukin