Fix remaining GlDropdown usage

app/assets/javascripts/design_management_legacy/components/upload/design_version_dropdown.vue

 <script>
-import { GlDropdown, GlDropdownItem } from '@gitlab/ui';
+import { GlDeprecatedDropdown, GlDeprecatedDropdownItem } from '@gitlab/ui';
 import { __, sprintf } from '~/locale';
 import allVersionsMixin from '../../mixins/all_versions';
 import { findVersionId } from '../../utils/design_management_utils';
 
 export default {
   components: {
-    GlDropdown,
-    GlDropdownItem,
+    GlDeprecatedDropdown,
+    GlDeprecatedDropdownItem,
   },
   mixins: [allVersionsMixin],
   computed: {
@@ -50,8 +50,8 @@ export default {
 </script>
 
 <template>
-  <gl-dropdown :text="dropdownText" variant="link" class="design-version-dropdown">
-    <gl-dropdown-item v-for="(version, index) in allVersions" :key="version.node.id">
+  <gl-deprecated-dropdown :text="dropdownText" variant="link" class="design-version-dropdown">
+    <gl-deprecated-dropdown-item v-for="(version, index) in allVersions" :key="version.node.id">
       <router-link
         class="d-flex js-version-link"
         :to="{ path: $route.path, query: { version: findVersionId(version.node.id) } }"
@@ -71,6 +71,6 @@ export default {
           class="fa fa-check float-right gl-mr-2"
         ></i>
       </router-link>
-    </gl-dropdown-item>
-  </gl-dropdown>
+    </gl-deprecated-dropdown-item>
+  </gl-deprecated-dropdown>
 </template>

spec/frontend/design_management_legacy/components/upload/__snapshots__/design_version_dropdown_spec.js.snap

 // Jest Snapshot v1, https://goo.gl/fbAQLP
 
 exports[`Design management design version dropdown component renders design version dropdown button 1`] = `
-<gl-dropdown-stub
+<gl-deprecated-dropdown-stub
   class="design-version-dropdown"
   issueiid=""
   projectpath=""
   text="Showing Latest Version"
   variant="link"
 >
-  <gl-dropdown-item-stub>
+  <gl-deprecated-dropdown-item-stub>
     <router-link-stub
       class="d-flex js-version-link"
       to="[object Object]"
@@ -31,8 +31,8 @@ exports[`Design management design version dropdown component renders design vers
         class="fa fa-check float-right gl-mr-2"
       />
     </router-link-stub>
-  </gl-dropdown-item-stub>
-  <gl-dropdown-item-stub>
+  </gl-deprecated-dropdown-item-stub>
+  <gl-deprecated-dropdown-item-stub>
     <router-link-stub
       class="d-flex js-version-link"
       to="[object Object]"
@@ -51,19 +51,19 @@ exports[`Design management design version dropdown component renders design vers
        
       <!---->
     </router-link-stub>
-  </gl-dropdown-item-stub>
-</gl-dropdown-stub>
+  </gl-deprecated-dropdown-item-stub>
+</gl-deprecated-dropdown-stub>
 `;
 
 exports[`Design management design version dropdown component renders design version list 1`] = `
-<gl-dropdown-stub
+<gl-deprecated-dropdown-stub
   class="design-version-dropdown"
   issueiid=""
   projectpath=""
   text="Showing Latest Version"
   variant="link"
 >
-  <gl-dropdown-item-stub>
+  <gl-deprecated-dropdown-item-stub>
     <router-link-stub
       class="d-flex js-version-link"
       to="[object Object]"
@@ -86,8 +86,8 @@ exports[`Design management design version dropdown component renders design vers
         class="fa fa-check float-right gl-mr-2"
       />
     </router-link-stub>
-  </gl-dropdown-item-stub>
-  <gl-dropdown-item-stub>
+  </gl-deprecated-dropdown-item-stub>
+  <gl-deprecated-dropdown-item-stub>
     <router-link-stub
       class="d-flex js-version-link"
       to="[object Object]"
@@ -106,6 +106,6 @@ exports[`Design management design version dropdown component renders design vers
        
       <!---->
     </router-link-stub>
-  </gl-dropdown-item-stub>
-</gl-dropdown-stub>
+  </gl-deprecated-dropdown-item-stub>
+</gl-deprecated-dropdown-stub>
 `;