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

Author: renovate[bot]

.github/workflows/test.yaml

@@ -14,7 +14,7 @@ jobs:
     - uses: actions/checkout@v6
     - uses: pnpm/action-setup@v4
     - name: Use Node.js 22
-      uses: actions/setup-node@v4
+      uses: actions/setup-node@v6
       with:
         node-version: 22
         cache: 'pnpm'