Bump @embroider/test-setup from 3.0.3 to 4.0.0

Bumps [@embroider/test-setup](https://github.com/embroider-build/embroider/tree/HEAD/packages/test-setup) from 3.0.3 to 4.0.0.
- [Release notes](https://github.com/embroider-build/embroider/releases)
- [Changelog](https://github.com/embroider-build/embroider/blob/main/CHANGELOG.md)
- [Commits](https://github.com/embroider-build/embroider/commits/HEAD/packages/test-setup)

---
updated-dependencies:
- dependency-name: "@embroider/test-setup"
  dependency-type: direct:development
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <[email protected]>

package.json

@@ -113,7 +113,7 @@
     "@ember/optional-features": "^2.2.0",
     "@ember/string": "^3.1.1",
     "@ember/test-helpers": "^3.3.1",
-    "@embroider/test-setup": "^3.0.3",
+    "@embroider/test-setup": "^4.0.0",
     "@fullhuman/postcss-purgecss": "^4.1.3",
     "@release-it-plugins/lerna-changelog": "^7.0.0",
     "broccoli-asset-rev": "^3.0.0",