Bump ember-cli from 4.3.0 to 4.6.0 in /test-app

Bumps [ember-cli](https://github.com/ember-cli/ember-cli) from 4.3.0 to 4.6.0.
- [Release notes](https://github.com/ember-cli/ember-cli/releases)
- [Changelog](https://github.com/ember-cli/ember-cli/blob/master/CHANGELOG.md)
- [Commits](ember-cli/ember-cli@v4.3.0...v4.6.0)

---
updated-dependencies:
- dependency-name: ember-cli
  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

@@ -38,7 +38,7 @@
     "broccoli-asset-rev": "^3.0.0",
     "ember-angle-bracket-invocation-polyfill": "^3.0.1",
     "ember-auto-import": "^2.4.1",
-    "ember-cli": "~4.3.0",
+    "ember-cli": "~4.6.0",
     "ember-cli-babel": "^7.26.11",
     "ember-cli-dependency-checker": "^3.3.1",
     "ember-cli-fastboot": "^3.3.2",