fix ember-try

Author: mansona

packages/ember-cli-fastboot/tests/dummy/config/ember-try.js

@@ -13,6 +13,8 @@ module.exports = async function () {
           devDependencies: {
             'ember-source': '~3.16.0',
             'ember-qunit': '^5.0.0',
+            'ember-cli': '^4.12.0',
+            '@ember/test-helpers': '^2.4.0',
           },
         },
       },
@@ -22,6 +24,8 @@ module.exports = async function () {
           devDependencies: {
             'ember-source': '~3.20.5',
             'ember-qunit': '^5.0.0',
+            'ember-cli': '^4.12.0',
+            '@ember/test-helpers': '^2.4.0',
           },
         },
       },
@@ -31,6 +35,8 @@ module.exports = async function () {
           devDependencies: {
             'ember-source': '~3.24.3',
             'ember-qunit': '^5.0.0',
+            'ember-cli': '^4.12.0',
+            '@ember/test-helpers': '^2.4.0',
           },
         },
       },
@@ -39,6 +45,7 @@ module.exports = async function () {
         npm: {
           devDependencies: {
             'ember-source': '~3.28.0',
+            'ember-cli': '^4.12.0',
           },
         },
       },