upgrade GH actions

Author: mourner

.github/workflows/node.yml

@@ -5,12 +5,12 @@ jobs:
     runs-on: ubuntu-latest
     steps:
     - name: Checkout
-      uses: actions/checkout@v2
+      uses: actions/checkout@v4
 
     - name: Setup Node
-      uses: actions/setup-node@v1
+      uses: actions/setup-node@v4
       with:
-        node-version: 18
+        node-version: 20
 
     - name: Install dependencies
       run: npm install