chore(deps): stable ember infrastructure

Author: renovate-bot

package.json

@@ -42,7 +42,7 @@
     "@types/rsvp": "4.0.3",
     "broccoli-asset-rev": "3.0.0",
     "ember-ajax": "5.0.0",
-    "ember-cli": "3.21.2",
+    "ember-cli": "3.22.0",
     "ember-cli-app-version": "3.2.0",
     "ember-cli-dependency-checker": "3.2.0",
     "ember-cli-eslint": "5.1.0",
@@ -61,7 +61,7 @@
     "ember-resolver": "8.0.2",
     "ember-source": "3.22.0",
     "ember-welcome-page": "4.0.0",
-    "eslint-plugin-ember": "9.3.0",
+    "eslint-plugin-ember": "9.4.0",
     "husky": "1.3.1",
     "loader.js": "4.7.0",
     "nyc": "14.1.1",