DEV: Upgrade to Ember 3.28

app/assets/javascripts/select-kit/ember-cli-build.js

@@ -9,5 +9,19 @@ module.exports = function (defaults) {
     },
   });
 
-  return app.toTree();
+  /*
+    This build file specifies the options for the dummy test app of this
+    addon, located in `/tests/dummy`
+    This build file does *not* influence how the addon or the app using it
+    behave. You most likely want to be modifying `./index.js` or app's build file
+  */
+
+  const { maybeEmbroider } = require("@embroider/test-setup");
+  return maybeEmbroider(app, {
+    skipBabel: [
+      {
+        package: "qunit",
+      },
+    ],
+  });
 };