Karma test fails on TimelineHeaderItemComponent

FAILED TESTS:
  TimelineHeaderItemComponent
    computed
      timelineHeaderClass
        ✖ returns string containing `label-dark` when current year and month is less than timeframeItem year and month
          Chrome
        Expected 'label-dark label-bold' to be 'label-dark'.
            at UserContext.<anonymous> (webpack:///builds/gitlab-org/gitlab-ee/spec/javascripts/roadmap/components/timeline_header_item_spec.js:96:0 <- spec/javascripts/test_bundle.js:404438:40)

Job #55134235 failed for b1e28a4e: