Migrate deprecated buttons from admin delete user modal

app/assets/javascripts/pages/admin/users/components/delete_user_modal.vue

 <script>
 import { escape } from 'lodash';
-import { GlModal, GlDeprecatedButton, GlFormInput } from '@gitlab/ui';
+import { GlModal, GlButton, GlFormInput } from '@gitlab/ui';
 import { s__, sprintf } from '~/locale';
 
 export default {
   components: {
     GlModal,
-    GlDeprecatedButton,
+    GlButton,
     GlFormInput,
   },
   props: {
@@ -122,15 +122,18 @@ export default {
       </form>
     </template>
     <template #modal-footer>
-      <gl-deprecated-button variant="secondary" @click="onCancel">{{
-        s__('Cancel')
-      }}</gl-deprecated-button>
-      <gl-deprecated-button :disabled="!canSubmit" variant="warning" @click="onSecondaryAction">
+      <gl-button @click="onCancel">{{ s__('Cancel') }}</gl-button>
+      <gl-button
+        :disabled="!canSubmit"
+        category="primary"
+        variant="warning"
+        @click="onSecondaryAction"
+      >
         {{ secondaryAction }}
-      </gl-deprecated-button>
-      <gl-deprecated-button :disabled="!canSubmit" variant="danger" @click="onSubmit">{{
+      </gl-button>
+      <gl-button :disabled="!canSubmit" category="primary" variant="danger" @click="onSubmit">{{
         action
-      }}</gl-deprecated-button>
+      }}</gl-button>
     </template>
   </gl-modal>
 </template>

spec/frontend/pages/admin/users/components/__snapshots__/delete_user_modal_spec.js.snap

@@ -37,29 +37,35 @@ exports[`User Operation confirmation modal renders modal with form included 1`]
       value=""
     />
   </form>
-  <gl-deprecated-button-stub
-    size="md"
-    variant="secondary"
+  <gl-button-stub
+    category="tertiary"
+    icon=""
+    size="medium"
+    variant="default"
   >
     Cancel
-  </gl-deprecated-button-stub>
+  </gl-button-stub>
    
-  <gl-deprecated-button-stub
+  <gl-button-stub
+    category="primary"
     disabled="true"
-    size="md"
+    icon=""
+    size="medium"
     variant="warning"
   >
     
       secondaryAction
     
-  </gl-deprecated-button-stub>
+  </gl-button-stub>
    
-  <gl-deprecated-button-stub
+  <gl-button-stub
+    category="primary"
     disabled="true"
-    size="md"
+    icon=""
+    size="medium"
     variant="danger"
   >
     action
-  </gl-deprecated-button-stub>
+  </gl-button-stub>
 </div>
 `;

spec/frontend/pages/admin/users/components/delete_user_modal_spec.js

 import { shallowMount } from '@vue/test-utils';
-import { GlDeprecatedButton, GlFormInput } from '@gitlab/ui';
+import { GlButton, GlFormInput } from '@gitlab/ui';
 import DeleteUserModal from '~/pages/admin/users/components/delete_user_modal.vue';
 import ModalStub from './stubs/modal_stub';
 
@@ -13,7 +13,7 @@ describe('User Operation confirmation modal', () => {
 
   const findButton = variant =>
     wrapper
-      .findAll(GlDeprecatedButton)
+      .findAll(GlButton)
       .filter(w => w.attributes('variant') === variant)
       .at(0);
   const findForm = () => wrapper.find('form');