Update CI workflow for Node.js and action versions

Updated Node.js version to 20.x and action version to v4.

Author: PMS61

.github/workflows/ci.yml

@@ -14,9 +14,9 @@ jobs:
     - uses: actions/checkout@v3
 
     - name: Setup Node.js
-      uses: actions/setup-node@v3
+      uses: actions/setup-node@v4
       with:
-        node-version: '18'
+        node-version: '20.x'
         cache: 'npm'
 
     - name: Install dependencies
@@ -32,4 +32,5 @@ jobs:
     #   run: npm run test
 
     - name: Build
-      run: npm run build 
+
+      run: npm run build