Update dependency eslint to v9

Author: renovate[bot]

docs-app/package.json

@@ -67,7 +67,7 @@
     "ember-template-imports": "^4.0.0",
     "ember-template-lint": "^6.0.0",
     "ember-welcome-page": "^7.0.2",
-    "eslint": "^8.55.0",
+    "eslint": "^9.0.0",
     "eslint-config-prettier": "^9.1.0",
     "eslint-plugin-ember": "^12.0.0",
     "eslint-plugin-n": "^17.3.1",

package.json

@@ -132,7 +132,7 @@
     "ember-repl": "^4.1.1",
     "ember-resources": "^7.0.0",
     "ember-source": "~5.8.0",
-    "eslint": "^8.56.0",
+    "eslint": "^9.0.0",
     "pnpm-sync-dependencies-meta-injected": "^0.0.12",
     "prettier": "^3.1.1",
     "publint": "^0.2.7",