[github-actions] Bump actions/setup-node from 5 to 6 (#259)

Author: dependabot[bot]

.github/workflows/check.yaml

@@ -13,7 +13,7 @@ jobs:
           run_install: false
 
       - name: Set up Node.js
-        uses: actions/setup-node@v5
+        uses: actions/setup-node@v6
         with:
           node-version: "24"
           cache: "pnpm"