Update actions/setup-node action to v6

Author: renovate[bot]

.github/workflows/npm-publish.yml

@@ -10,7 +10,7 @@ jobs:
         uses: actions/checkout@v5
 
       - name: Setup Node
-        uses: actions/setup-node@v5
+        uses: actions/setup-node@v6
         with:
           node-version: '22'
           registry-url: 'https://registry.npmjs.org'