Ensure that deep dependencies use our local copy of @ember/test-waiters

Author: NullVoxPopuli

package.json

@@ -22,6 +22,11 @@
     "release-plan": "^0.11.0",
     "typescript": "~5.7.2"
   },
+  "pnpm": {
+    "overrides": {
+      "@ember/test-waiters": "workspace:*"
+    }
+  },
   "packageManager": "pnpm@9.14.2",
   "volta": {
     "node": "22.10.0",