chore(deps-dev): bump @ember/test-helpers from 3.2.0 to 3.2.1

Bumps [@ember/test-helpers](https://github.com/emberjs/ember-test-helpers) from 3.2.0 to 3.2.1.
- [Release notes](https://github.com/emberjs/ember-test-helpers/releases)
- [Commits](emberjs/ember-test-helpers@v3.2.0...v3.2.1)

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

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

package.json

@@ -48,7 +48,7 @@
     "@babel/plugin-proposal-decorators": "7.23.5",
     "@ember/optional-features": "2.0.0",
     "@ember/string": "3.1.1",
-    "@ember/test-helpers": "3.2.0",
+    "@ember/test-helpers": "3.2.1",
     "@embroider/test-setup": "3.0.2",
     "@glimmer/tracking": "1.1.2",
     "broccoli-asset-rev": "3.0.0",