Update model-gitlab-ultimate's existing models and add more designs
Update the Meltano Topics, Tables and Designs for Gitlab Ultimate and add new ones, following the updates introduced in the dbt-tap-gitlab revamp (dbt-tap-gitlab!3 (merged), dbt-tap-gitlab#3 (closed)).
The full list of updates will follow and duplicate the table ones done for model-gitlab
in model-gitlab#4 (closed), together with minor updates to all existing Meltano Table Models and Topics for Epic related entities to add the newly introduced labels_str