Update actions/setup-node action to v6

Author: renovate[bot]

actions/label-actions/.github/workflows/test.yml

@@ -15,7 +15,7 @@ jobs:
     name: Node ${{ matrix.node }}
     steps:
       - uses: actions/checkout@v4
-      - uses: actions/setup-node@v4
+      - uses: actions/setup-node@v6
         with:
           node-version: ${{ matrix.node }}