Update dependency @ember/test-helpers to v3.3.1

Author: renovate[bot]

packages/test-app/package.json

@@ -26,7 +26,7 @@
     "@babel/eslint-parser": "7.24.7",
     "@ember/optional-features": "2.1.0",
     "@ember/string": "3.1.1",
-    "@ember/test-helpers": "3.2.1",
+    "@ember/test-helpers": "3.3.1",
     "@embroider/macros": "1.16.2",
     "@embroider/test-setup": "3.0.3",
     "broccoli-asset-rev": "3.0.0",