Fix: Update Node.js version to 20 in GitHub Actions workflow

Author: najuna-brian

.github/workflows/deploy.yml

@@ -20,7 +20,7 @@ jobs:
 
       - uses: actions/setup-node@v4
         with:
-          node-version: 18
+          node-version: 20
           cache: npm
 
       - name: Install dependencies
@@ -45,7 +45,7 @@ jobs:
 
       - uses: actions/setup-node@v4
         with:
-          node-version: 18
+          node-version: 20
           cache: npm
 
       - name: Install dependencies