Moves prettier to dev dependency
What does this MR do?
This moves prettier into a dev dependency.
Are there points in the code the reviewer needs to double check?
That prettier is moved to a dev dependency.
Why was this MR needed?
One point in https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/16217
Does this MR meet the acceptance criteria?
- Review
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Has been reviewed by Frontend
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Conform by the merge request performance guides -
Conform by the style guides -
Squashed related commits together
What are the relevant issue numbers?
https://gitlab.com/gitlab-org/gitlab-ce/issues/41656
cc @timzallmann