danger: Use the changes_size Dangerfile from gitlab-dangerfiles
What does this MR do?
This will bring the changes from https://gitlab.com/gitlab-org/gitlab-dangerfiles/-/merge_requests/32 and https://gitlab.com/gitlab-org/gitlab-dangerfiles/-/merge_requests/29, which will actually allow to start importing Danger rules from gitlab-dangerfiles
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Edited by Rémy Coutable