build(deps-dev): bump @ember/test-helpers from 5.1.0 to 5.4.0

Bumps [@ember/test-helpers](https://github.com/emberjs/ember-test-helpers) from 5.1.0 to 5.4.0.
- [Release notes](https://github.com/emberjs/ember-test-helpers/releases)
- [Changelog](https://github.com/emberjs/ember-test-helpers/blob/master/CHANGELOG.md)
- [Commits](https://github.com/emberjs/ember-test-helpers/commits)

---
updated-dependencies:
- dependency-name: "@ember/test-helpers"
  dependency-version: 5.4.0
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

test-app/package.json

@@ -29,7 +29,7 @@
     "@babel/core": "^7.26.0",
     "@ember/optional-features": "^2.2.0",
     "@ember/string": "^4.0.1",
-    "@ember/test-helpers": "^5.1.0",
+    "@ember/test-helpers": "^5.4.0",
     "@embroider/test-setup": "^4.0.0",
     "@glimmer/component": "^1.1.2",
     "@glimmer/tracking": "^1.1.2",

yarn.lock

@@ -1106,10 +1106,10 @@
   resolved "https://registry.yarnpkg.com/@ember/string/-/string-4.0.1.tgz#2c9d3f749bad92567e99ab5b8d4fdb5ed7f0ff0c"
   integrity sha512-VWeng8BSWrIsdPfffOQt/bKwNKJL7+37gPFh/6iZZ9bke+S83kKqkS30poo4bTGfRcMnvAE0ie7txom+iDu81Q==
 
-"@ember/test-helpers@^5.1.0":
-  version "5.1.0"
-  resolved "https://registry.yarnpkg.com/@ember/test-helpers/-/test-helpers-5.1.0.tgz#1f7e75055be570357057a74058411f0b42729665"
-  integrity sha512-hZ+fZCz8uPKdCoZM4fMsn3dxmJq4/v86PKgrorrFlqeMqSQ3JrYM/tL4uwfKx1VQtYSWTRSsPMv1YoiWBTucsA==
+"@ember/test-helpers@^5.4.0":
+  version "5.4.0"
+  resolved "https://registry.yarnpkg.com/@ember/test-helpers/-/test-helpers-5.4.0.tgz#ddef1a71e04665200f16d3f83c710016b3bafe96"
+  integrity sha512-+dJ27A+w2/S8yYNnVEgHBrQFY9AM4A8KCSzLlO1nSvLsl1WYIz4GMlHOATaeDXuy+AMe7QTYspCsHqZ+5//GMg==
   dependencies:
     "@ember/test-waiters" "^3.1.0 || ^4.0.0"
     "@embroider/addon-shim" "^1.8.7"