feat: add rehype-sanitize for enhanced Markdown security

- Added rehype-sanitize as a dependency to sanitize Markdown content.
- Updated the Markdown component to include rehype-sanitize in the rehypePlugins for improved security against XSS attacks.

apps/ui/src/components/ui/markdown.tsx

@@ -1,5 +1,6 @@
 import ReactMarkdown from 'react-markdown';
 import rehypeRaw from 'rehype-raw';
+import rehypeSanitize from 'rehype-sanitize';
 import { cn } from '@/lib/utils';
 
 interface MarkdownProps {
@@ -44,7 +45,7 @@ export function Markdown({ children, className }: MarkdownProps) {
         className
       )}
     >
-      <ReactMarkdown rehypePlugins={[rehypeRaw]}>{children}</ReactMarkdown>
+      <ReactMarkdown rehypePlugins={[rehypeRaw, rehypeSanitize]}>{children}</ReactMarkdown>
     </div>
   );
 }