use the wporg cdn (#54795)

lib/experimental/fonts/font-library/font-library.php

@@ -62,7 +62,7 @@ function wp_register_font_collection( $config ) {
 	'id'          => 'default-font-collection',
 	'name'        => 'Google Fonts',
 	'description' => __( 'Add from Google Fonts. Fonts are copied to and served from your site.', 'gutenberg' ),
-	'src'         => 'https://raw.githubusercontent.com/WordPress/google-fonts-to-wordpress-collection/main/output/google-fonts-with-previews.json',
+	'src'         => 'https://s.w.org/images/fonts/16.7/collections/google-fonts-with-preview.json',
 );
 
 wp_register_font_collection( $default_font_collection );