Migrate ee/spec/javascripts/roadmap/ to Jest

Description

Let's migrate the specs in ee/spec/javascripts/roadmap/ from Karma to Jest.

See the related epic for how to do this.

• ee/spec/javascripts/roadmap/mock_data.js
• ee/spec/javascripts/roadmap/mixins/weeks_preset_mixin_spec.js
• ee/spec/javascripts/roadmap/mixins/quarters_preset_mixin_spec.js
• ee/spec/javascripts/roadmap/mixins/months_preset_mixin_spec.js
• ee/spec/javascripts/roadmap/utils/roadmap_utils_spec.js
• ee/spec/javascripts/roadmap/utils/epic_utils_spec.js
• ee/spec/javascripts/roadmap/components/epics_list_section_spec.js
• ee/spec/javascripts/roadmap/components/roadmap_timeline_section_spec.js
• ee/spec/javascripts/roadmap/components/roadmap_shell_spec.js
• ee/spec/javascripts/roadmap/components/roadmap_app_spec.js
• ee/spec/javascripts/roadmap/components/epic_item_details_spec.js
• ee/spec/javascripts/roadmap/components/preset_quarters/quarters_header_item_spec.js
• ee/spec/javascripts/roadmap/components/preset_quarters/quarters_header_sub_item_spec.js
• ee/spec/javascripts/roadmap/components/preset_weeks/weeks_header_item_spec.js
• ee/spec/javascripts/roadmap/components/preset_weeks/weeks_header_sub_item_spec.js
• ee/spec/javascripts/roadmap/components/epic_item_spec.js
• ee/spec/javascripts/roadmap/components/epics_list_empty_spec.js
• ee/spec/javascripts/roadmap/components/preset_months/months_header_item_spec.js
• ee/spec/javascripts/roadmap/components/preset_months/months_header_sub_item_spec.js
• ee/spec/javascripts/roadmap/components/epic_item_timeline_spec.js
• ee/spec/javascripts/roadmap/components/timeline_today_indicator_spec.js
• ee/spec/javascripts/roadmap/store/mutations_spec.js
• ee/spec/javascripts/roadmap/store/actions_spec.js