Retry artifact uploads on HTTP 500 (#833)

* Retry on 500

* bump package version

* fix tests

* Remove spurious change

* fix another test

* Roll back package version

src/internal/utils.ts

@@ -72,8 +72,9 @@ export function isRetryableStatusCode(statusCode: number | undefined): boolean {
 
   const retryableStatusCodes = [
     HttpCodes.BadGateway,
-    HttpCodes.ServiceUnavailable,
     HttpCodes.GatewayTimeout,
+    HttpCodes.InternalServerError,
+    HttpCodes.ServiceUnavailable,
     HttpCodes.TooManyRequests,
     413 // Payload Too Large
   ]