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

Author: renovate[bot]

.github/workflows/ci.yaml

@@ -16,7 +16,7 @@ jobs:
         node-version: [18.x, 20.x]
     steps:
       - uses: actions/checkout@v4
-      - uses: actions/setup-node@v4
+      - uses: actions/setup-node@v6
         with:
           node-version: ${{ matrix.node-version }}
           registry-url: https://registry.npmjs.org
@@ -34,7 +34,7 @@ jobs:
         projects_name: [chromium, firefox, webkit]
     steps:
       - uses: actions/checkout@v4
-      - uses: actions/setup-node@v4
+      - uses: actions/setup-node@v6
         with:
           node-version: 18.x
           registry-url: https://registry.npmjs.org