feat: add HTTP 504 to retryOn status codes list ✨

Author: pelikhan

packages/core/src/fetch.ts

@@ -33,7 +33,7 @@ export async function createFetch(
 ) {
     const {
         retries = FETCH_RETRY_DEFAULT,
-        retryOn = [429, 500],
+        retryOn = [429, 500, 504],
         trace,
         retryDelay = FETCH_RETRY_DEFAULT_DEFAULT,
         maxDelay = FETCH_RETRY_MAX_DELAY_DEFAULT,