Bump ember-cli to support latest ember-qunit, but pre-borewrDependencies removal

Author: NullVoxPopuli

test-app/config/ember-try.js

@@ -11,7 +11,7 @@ module.exports = async function () {
         npm: {
           devDependencies: {
             'ember-source': '~3.28.0',
-            'ember-cli': '~3.28.0',
+            'ember-cli': '^4.12.1',
           },
         },
       },