feat: allow Python file uploads

Extended the MIME types to permit Python (.py) file uploads.
This enhances flexibility for users needing to upload scripts
via the media library. No other functionalities were altered.

functions.php

@@ -827,3 +827,9 @@ function handle_pdf_download()
     }
 }
 add_action('template_redirect', 'handle_pdf_download');
+
+function allow_more_uploads($mime_types) {
+    $mime_types['py'] = 'text/x-python';
+    return $mime_types;
+}
+add_filter('upload_mimes', 'allow_more_uploads');