Bump @ember/test-helpers from 4.0.2 to 4.0.4 (#1395)

Bumps [@ember/test-helpers](https://github.com/emberjs/ember-test-helpers) from 4.0.2 to 4.0.4.
- [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-type: direct:development
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

yarn.lock

@@ -1118,9 +1118,9 @@
     silent-error "^1.1.1"
 
 "@ember/test-helpers@^4.0.2":
-  version "4.0.2"
-  resolved "https://registry.yarnpkg.com/@ember/test-helpers/-/test-helpers-4.0.2.tgz#728fab314280381b04f70a1fd1014f5db6c24aca"
-  integrity sha512-9vV5nDx1ZzmTmexzTudRk9M04JY6mqB3NxJB116vkjGQWIRTgiAVUgBkFIudRXvX1QiOGTo6IPxQRXZRS+v28w==
+  version "4.0.4"
+  resolved "https://registry.yarnpkg.com/@ember/test-helpers/-/test-helpers-4.0.4.tgz#2ffb55c8438b8ba54ecd4f546059ba0166bc00f2"
+  integrity sha512-1mbOVyVEcLxYOGzBaeeaQkCrL1o9Av86QaHk/1RvrVBW24I6YUj1ILLEi2qLZT5PzcCy0TdfadHT3hKJwJ0GcQ==
   dependencies:
     "@ember/test-waiters" "^3.1.0"
     "@embroider/addon-shim" "^1.8.7"