⬆️ upgrade eslint to v9

Author: renovate[bot]

package.json

@@ -33,7 +33,7 @@
   "devDependencies": {
     "@types/node": "^20.1.7",
     "@types/ws": "^8.18.1",
-    "eslint": "^8.40.0",
+    "eslint": "^9.0.0",
     "eslint-config-antoine": "^1.0.3",
     "nodemon": "^3.0.0",
     "prettier": "^3.0.0",