Update dependency eslint to v9

Author: renovate[bot]

webui/package.json

@@ -48,7 +48,7 @@
     "@types/node": "^20.17.6",
     "@types/react": "^18.3.12",
     "@types/react-dom": "^18.3.1",
-    "eslint": "^8.57.1",
+    "eslint": "^9.16.0",
     "eslint-config-next": "14.2.16",
     "postcss": "^8.4.47",
     "postcss-preset-mantine": "^1.17.0",