Update actions/setup-node action to v6

Author: renovate[bot]

.github/workflows/update.yml

@@ -11,7 +11,7 @@ jobs:
     steps:
       - uses: actions/checkout@v4
       - name: Use Node.js
-        uses: actions/setup-node@v4
+        uses: actions/setup-node@v6
       - run: npm install
       - run: node index.js
       - name: Config