Update actions/setup-node action to v6 (#100)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

.github/workflows/publish.yaml

@@ -17,7 +17,7 @@ jobs:
       - name: Checkout code
         uses: actions/checkout@v6
 
-      - uses: actions/setup-node@v4
+      - uses: actions/setup-node@v6
         with:
           node-version: '24'
           registry-url: 'https://registry.npmjs.org'