Update Node.js setup action to version 6

Author: codebam

.github/workflows/nightly.yml

@@ -13,7 +13,7 @@ jobs:
       packages: write
     steps:
       - uses: actions/checkout@v6
-      - uses: actions/setup-node@v4
+      - uses: actions/setup-node@v6
         with:
           node-version: latest
           registry-url: https://npm.pkg.github.com/