@ember/test-helpers: Add resolution to enforce

Author: Turbo87

package.json

@@ -143,6 +143,7 @@
     "webpack": "5.97.1"
   },
   "resolutions": {
+    "@ember/test-helpers": "5.1.0",
     "ember-get-config": "2.1.1",
     "ember-inflector": "5.0.2",
     "ember-modifier": "4.2.0",