add delete department popup translation

src/components/ui/VnTree.vue

@@ -55,8 +55,8 @@ const fetchNodeLeaves = async (nodeKey) => {
 const removeNode = (node) => {
     quasar
         .dialog({
-            title: 'Are you sure you want to delete it?',
-            message: 'Delete department',
+            title: t('Are you sure you want to delete it?'),
+            message: t('Delete department'),
             ok: {
                 push: true,
                 color: 'primary',