Update visual snapshots that contains buttons with "secondary" styles
Visual tests are failing because button styles were updated (see https://gitlab.com/gitlab-org/gitlab-ce/commit/15837ed92721f700d2a34b949e1147dff9b78dca#351bd2ab6881daf244b6a8d3236aa2647b229c31_25_24) and snapshots capture the old button styles:
https://gitlab.com/gitlab-org/gitlab-ui/-/jobs/220013527