Replace underscore/lodash security dashboard

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

 <script>
-import { isUndefined } from 'underscore';
+import { isUndefined } from 'lodash';
 import { GlEmptyState, GlSprintf } from '@gitlab/ui';
 import { s__ } from '~/locale';
 import Icon from '~/vue_shared/components/icon.vue';

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

 <script>
-import { isUndefined } from 'underscore';
+import { isUndefined } from 'lodash';
 import { mapActions, mapState, mapGetters } from 'vuex';
 import IssueModal from 'ee/vue_shared/security_reports/components/modal.vue';
 import Filters from './filters.vue';

ee/app/assets/javascripts/security_dashboard/store/modules/vulnerabilities/utils.js

 /* eslint-disable import/prefer-default-export */
-import { isEqual } from 'underscore';
+import { isEqual } from 'lodash';
 
 const isVulnerabilityLike = object =>
   Boolean(object && object.location && object.identifiers && object.identifiers[0]);