Fetch windows QA releases file

Author: shivammathur

scripts/update-backend

@@ -51,6 +51,8 @@ usergroups_update_infos($root);
 
 fetch_into_file("https://downloads.php.net/~windows/releases/releases.json", "$root/backend/win-releases.json");
 
+fetch_into_file("https://downloads.php.net/~windows/qa/releases.json", "$root/backend/win-qa-releases.json");
+
 // Fetch data into a temporary file first, and then
 // overwrite the real file with the new data
 function fetch_into_file($url, $file)