Update go-gitlab and fixes
Per https://docs.gitlab.com/ee/user/project/integrations/webhook_events.html#merge-request-events
- An existing merge request is updated, approved (by all required approvers), unapproved, merged, or closed.
- An individual user adds or removes their approval to an existing merge request.
Since we don't have "required approvers", play on the safe side and use "approval". The approved is working with version 0.3.0 deployed, but we can make no warranties.
Fixes #27 (closed)
Closes !59 (merged)
Edited by Pablo Correa Gomez