chore: 🤖 upgrade to "ember-simple-auth": "^4.0.0"

addons/auth/package.json

@@ -23,7 +23,7 @@
   "dependencies": {
     "ember-cli-babel": "^7.26.6",
     "ember-cli-htmlbars": "^5.7.1",
-    "ember-simple-auth": "^3.0.1"
+    "ember-simple-auth": "^4.0.0"
   },
   "devDependencies": {
     "@ember/optional-features": "^2.0.0",