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

Author: renovate[bot]

.github/workflows/build.yml

@@ -8,7 +8,7 @@ jobs:
       - uses: actions/setup-go@v6
         with:
           go-version: 1.25.x
-      - uses: actions/setup-node@v5
+      - uses: actions/setup-node@v6
         with:
           node-version: '22'
       - uses: actions/checkout@v5