Add missing BV_SHOW_MODAL import

ee/app/assets/javascripts/security_dashboard/components/vulnerability_action_buttons.vue

@@ -2,6 +2,7 @@
 import { mapActions, mapState } from 'vuex';
 import { GlTooltipDirective, GlButton } from '@gitlab/ui';
 import { VULNERABILITY_MODAL_ID } from 'ee/vue_shared/security_reports/components/constants';
+import { BV_SHOW_MODAL } from '~/lib/utils/constants';
 import { s__ } from '~/locale';
 
 export default {