Update dependency eslint to v9

Author: renovate[bot]

ember-metrics-simple-analytics/package.json

@@ -46,7 +46,7 @@
     "@rollup/plugin-babel": "^6.0.0",
     "concurrently": "^9.0.0",
     "ember-template-lint": "^6.0.0",
-    "eslint": "^8.0.0",
+    "eslint": "^9.0.0",
     "eslint-config-prettier": "^9.0.0",
     "eslint-plugin-ember": "^12.0.0",
     "eslint-plugin-node": "^11.1.0",