Add @ember/test-waiters resolution

This should reduce the number of `@ember/test-waiters` copies in our dependency tree to one to avoid conflicts between them.

Author: Turbo87

package.json

@@ -145,6 +145,7 @@
     "webpack": "5.98.0"
   },
   "resolutions": {
+    "@ember/test-waiters": "4.1.0",
     "ember-auto-import": "2.10.0",
     "ember-get-config": "2.1.1",
     "ember-inflector": "6.0.0",