chore: update ci

Author: atinux

.github/workflows/nuxthub.yml

@@ -33,8 +33,8 @@ jobs:
       - name: Ensure NuxtHub module is installed
         run: pnpx nuxthub@latest ensure
 
-      - name: Build application
-        run: pnpm build
+      - name: Build playground
+        run: pnpm dev:prepare && pnpm dev:build
 
       - name: Deploy to NuxtHub
         uses: nuxt-hub/action@v1