chore: update default Node.js version to 20.19.4 in action.yml

Author: OnestarLee

.github/actions/setup/action.yml

@@ -4,7 +4,7 @@ inputs:
   node-version:
     description: 'Node.js version to use'
     required: false
-    default: '20.9.0'
+    default: '20.19.4'
 
 runs:
   using: 'composite'