chore: update actions/setup-node action to v4

Author: renovate[bot]

.github/workflows/CI.yml

@@ -18,7 +18,7 @@ jobs:
     - name: Checkout
       uses: actions/checkout@v4
     - name: Use Node.js
-      uses: actions/setup-node@v3
+      uses: actions/setup-node@v4
       with:
         node-version: 20
         cache: 'npm'