refactor(demo): google with tailwind

Author: bukinoshita

apps/demo/emails/newsletters/google-play-policy-update.tsx

@@ -12,6 +12,7 @@ import {
   Section,
   Text,
 } from '@react-email/components';
+import { Tailwind } from '@react-email/tailwind';
 
 const baseUrl = process.env.VERCEL_URL
   ? `https://${process.env.VERCEL_URL}`