Update actions/setup-node action to v6

Author: renovate[bot]

.github/workflows/deploy.yml

@@ -15,7 +15,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v3
-      - uses: actions/setup-node@v3
+      - uses: actions/setup-node@v6
         with:
           node-version: 18
           cache: npm

.github/workflows/npm.yml

@@ -8,7 +8,7 @@ jobs:
     steps:
       - uses: actions/checkout@v3
       - name: Set up Node 18
-        uses: actions/setup-node@v3
+        uses: actions/setup-node@v6
         with:
           node-version: 18
           check-latest: true