Refactored queries.

src/app/(main)/reports/retention/page.tsx

@@ -1,9 +1,10 @@
+import { Metadata } from 'next';
 import RetentionReport from './RetentionReport';
 
 export default function RetentionReportPage() {
   return <RetentionReport reportId={null} />;
 }
 
-export const metadata = {
+export const metadata: Metadata = {
   title: 'Create Report | umami',
 };