[blog] Add Material UI v6 stable release

docs/pages/blog/material-ui-v6-is-out.js

@@ -0,0 +1,7 @@
+import * as React from 'react';
+import TopLayoutBlog from 'docs/src/modules/components/TopLayoutBlog';
+import { docs, srcComponents } from './material-ui-v6-is-out.md?muiMarkdown';
+
+export default function Page() {
+  return <TopLayoutBlog docs={docs} srcComponents={srcComponents} />;
+}