Bump actions/setup-node whose old version is EOL (#310)

Author: jkbe

.github/workflows/ci.yml

@@ -69,7 +69,7 @@ jobs:
     steps:
       - uses: actions/checkout@v3
 
-      - uses: actions/setup-node@v2
+      - uses: actions/setup-node@v4
         with:
           node-version: ${{ matrix.node-version }}
           cache: npm