chore(deps): update actions/setup-node action to v6 (#1393)

Author: renovate[bot]

.github/workflows/build.yml

@@ -47,7 +47,7 @@ jobs:
         uses: actions/checkout@v5
 
       - name: Set up nodejs
-        uses: actions/setup-node@v5
+        uses: actions/setup-node@v6
         with:
           node-version: current
 

.github/workflows/documents.yml

@@ -38,7 +38,7 @@ jobs:
         uses: actions/checkout@v5
 
       - name: Set up nodejs
-        uses: actions/setup-node@v5
+        uses: actions/setup-node@v6
         with:
           node-version: 23.x