Upgrade addons/auth to Ember 4.12 (#1947)

* Ember `addon/auth` upgrade v4.4.1...v4.12.2

* Update .npmignore

* refactor: 💡 Quick refactor

Refactor `.eslintrc.js` to current `ecmaVersion` and use latest
`babelOptions`. Revert `.prettier.js` to use previous overrides. Setup
scripts to use `concurrently` instead of `npm-run-all`

* refactor: 💡 removed `npm-run-all`

Removed `npm-run-all` from package.json

addons/auth/tests/dummy/config/ember-cli-update.json

@@ -3,7 +3,7 @@
   "packages": [
     {
       "name": "ember-cli",
-      "version": "4.4.1",
+      "version": "4.12.2",
       "blueprints": [
         {
           "name": "addon",

addons/auth/tests/dummy/config/ember-try.js

@@ -0,0 +1,58 @@
+/**
+ * Copyright (c) HashiCorp, Inc.
+ * SPDX-License-Identifier: MPL-2.0
+ */
+
+'use strict';
+
+const getChannelURL = require('ember-source-channel-url');
+const { embroiderSafe, embroiderOptimized } = require('@embroider/test-setup');
+
+module.exports = async function () {
+  return {
+    scenarios: [
+      {
+        name: 'ember-lts-4.4',
+        npm: {
+          devDependencies: {
+            'ember-source': '~4.4.0',
+          },
+        },
+      },
+      {
+        name: 'ember-lts-4.8',
+        npm: {
+          devDependencies: {
+            'ember-source': '~4.8.0',
+          },
+        },
+      },
+      {
+        name: 'ember-release',
+        npm: {
+          devDependencies: {
+            'ember-source': await getChannelURL('release'),
+          },
+        },
+      },
+      {
+        name: 'ember-beta',
+        npm: {
+          devDependencies: {
+            'ember-source': await getChannelURL('beta'),
+          },
+        },
+      },
+      {
+        name: 'ember-canary',
+        npm: {
+          devDependencies: {
+            'ember-source': await getChannelURL('canary'),
+          },
+        },
+      },
+      embroiderSafe(),
+      embroiderOptimized(),
+    ],
+  };
+};

addons/auth/tests/dummy/config/environment.js

@@ -6,20 +6,17 @@
 'use strict';
 
 module.exports = function (environment) {
-  let ENV = {
+  const ENV = {
     modulePrefix: 'dummy',
     environment,
     rootURL: '/',
     locationType: 'history',
     EmberENV: {
+      EXTEND_PROTOTYPES: false,
       FEATURES: {
         // Here you can enable experimental features on an ember canary build
         // e.g. EMBER_NATIVE_DECORATOR_SUPPORT: true
       },
-      EXTEND_PROTOTYPES: {
-        // Prevent Ember Data from overriding Date.parse.
-        Date: false,
-      },
     },
 
     APP: {