Update dependency ember-cli to v5.9.0 (#8801)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

package.json

@@ -80,7 +80,7 @@
     "broccoli-asset-rev": "3.0.0",
     "ember-a11y-testing": "6.1.1",
     "ember-auto-import": "2.7.3",
-    "ember-cli": "5.8.1",
+    "ember-cli": "5.9.0",
     "ember-cli-app-version": "6.0.1",
     "ember-cli-babel": "8.2.0",
     "ember-cli-bundle-analyzer": "1.0.0",