Fix jest spec using old GlTab interface

This was caused by the [update to the GlTab component in gitlab-u][1]
and then [bumping our gitlab-ui version][2]. Unfortunately, we
only had a CE MR for bumping the gitlab-ui version. 😞

[1]: https://gitlab.com/gitlab-org/gitlab-ui/merge_requests/623
[2]: https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/31242

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

@@ -120,7 +120,6 @@ export default {
           v-for="listType in listTypes"
           :key="listType.namespace"
           :disabled="isTabDisabled(listType.namespace)"
-          title-link-class="js-tab"
         >
           <template v-slot:title>
             {{ listType.label }}

ee/spec/frontend/dependencies/components/app_spec.js

@@ -308,7 +308,7 @@ describe('DependenciesApp component with dependencyListVulnerabilities feature f
   const findJobFailedAlert = () => wrapper.find(DependencyListJobFailedAlert);
   const findIncompleteListAlert = () => wrapper.find(DependencyListIncompleteAlert);
   const findDependenciesTables = () => wrapper.findAll(PaginatedDependenciesTable);
-  const findTabControls = () => wrapper.findAll('.js-tab');
+  const findTabControls = () => wrapper.findAll('.gl-tab-nav-item');
   const findVulnerableTabControl = () => findTabControls().at(1);
   const findVulnerableTabComponent = () => wrapper.findAll(GlTab).at(1);
 
@@ -426,6 +426,10 @@ describe('DependenciesApp component with dependencyListVulnerabilities feature f
         });
       });
 
+      it('has enabled vulnerable tab', () => {
+        expect(findVulnerableTabComponent().classes('disabled')).toBe(false);
+      });
+
       describe('given there are no vulnerable dependencies', () => {
         beforeEach(() => {
           store.state[vulnerableNamespace].dependencies = [];
@@ -435,11 +439,7 @@ describe('DependenciesApp component with dependencyListVulnerabilities feature f
         });
 
         it('disables the vulnerable tab', () => {
-          expect(findVulnerableTabComponent().props()).toEqual(
-            expect.objectContaining({
-              disabled: true,
-            }),
-          );
+          expect(findVulnerableTabComponent().classes('disabled')).toBe(true);
         });
       });
     });