Update Node.js version to 20 in CI/CD pipeline

Author: gitcoder89431

.github/workflows/ci.yml

@@ -14,7 +14,7 @@ jobs:
       - uses: actions/checkout@v4
       - uses: actions/setup-node@v4
         with:
-          node-version: '18'
+          node-version: '20'
           cache: 'npm'
       - run: npm ci
       - run: npm run lint
@@ -28,7 +28,7 @@ jobs:
       - uses: actions/checkout@v4
       - uses: actions/setup-node@v4
         with:
-          node-version: '18'
+          node-version: '20'
           cache: 'npm'
       - run: npm ci
       - run: npm audit --audit-level moderate