Build(deps-dev): Bump @ember/test-helpers from 5.3.0 to 5.4.0 (#2374)

Bumps [@ember/test-helpers](https://github.com/emberjs/ember-test-helpers) from 5.3.0 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
...

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

package.json

@@ -110,7 +110,7 @@
     "@electron/fuses": "^1.8.0",
     "@ember/app-tsconfig": "^1.0.3",
     "@ember/optional-features": "^2.2.0",
-    "@ember/test-helpers": "^5.3.0",
+    "@ember/test-helpers": "^5.4.0",
     "@embroider/compat": "^4.1.8",
     "@embroider/config-meta-loader": "^1.0.0",
     "@embroider/core": "^4.2.5",