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

Author: renovate[bot]

.github/workflows/ci.yml

@@ -13,7 +13,7 @@ jobs:
       - name: Checkout
         uses: actions/checkout@v4
       - name: Setup Node
-        uses: actions/setup-node@v4
+        uses: actions/setup-node@v6
         with:
           node-version: 20
       - uses: pnpm/action-setup@v4

.github/workflows/deploy.yml

@@ -33,7 +33,7 @@ jobs:
         with:
           fetch-depth: 0 # Not needed if lastUpdated is not enabled
       - name: Setup Node
-        uses: actions/setup-node@v4
+        uses: actions/setup-node@v6
         with:
           node-version: 20
       - uses: pnpm/action-setup@v4