chore: bump version to 2.21.9 and update dependencies across multiple packages (#420)

- Updated application version from 2.21.8 to 2.21.9 in package.json.
- Upgraded dependencies including prettier to version 3.7.4, @supabase/supabase-js to version 2.86.0, and @tanstack/react-query to version 5.90.11.
- Adjusted various package.json files to reflect updated versions for lucide-react, react-hook-form, and nodemailer.
- Enhanced pnpm-lock.yaml and pnpm-workspace.yaml for consistency in package versions.
- Refactored import statements in several components for improved readability.

packages/ui/src/makerkit/marketing/newsletter-signup-container.tsx

@@ -8,8 +8,7 @@ import { Heading } from '../../shadcn/heading';
 import { Spinner } from '../spinner';
 import { NewsletterSignup } from './newsletter-signup';
 
-interface NewsletterSignupContainerProps
-  extends React.HTMLAttributes<HTMLDivElement> {
+interface NewsletterSignupContainerProps extends React.HTMLAttributes<HTMLDivElement> {
   onSignup: (email: string) => Promise<void>;
   heading?: string;
   description?: string;