Convert deprecated buttons to glButtons in discussion_filter_note.vue

app/assets/javascripts/notes/components/discussion_filter_note.vue

 <script>
-import { GlDeprecatedButton } from '@gitlab/ui';
+import { GlButton } from '@gitlab/ui';
 import Icon from '~/vue_shared/components/icon.vue';
 import { __, sprintf } from '~/locale';
 
@@ -7,7 +7,7 @@ import notesEventHub from '../event_hub';
 
 export default {
   components: {
-    GlDeprecatedButton,
+    GlButton,
     Icon,
   },
   computed: {
@@ -40,12 +40,12 @@ export default {
     <div class="timeline-content">
       <div ref="timelineContent" v-html="timelineContent"></div>
       <div class="discussion-filter-actions mt-2">
-        <gl-deprecated-button ref="showAllActivity" variant="default" @click="selectFilter(0)">
+        <gl-button ref="showAllActivity" variant="default" @click="selectFilter(0)">
           {{ __('Show all activity') }}
-        </gl-deprecated-button>
-        <gl-deprecated-button ref="showComments" variant="default" @click="selectFilter(1)">
+        </gl-button>
+        <gl-button ref="showComments" variant="default" @click="selectFilter(1)">
           {{ __('Show comments only') }}
-        </gl-deprecated-button>
+        </gl-button>
       </div>
     </div>
   </li>