[debugsyms] Increase retry backoff multiplier

Bug: 69677
Change-Id: I185b7ea50d6aaeab2242af87e45167a3b5caf09d
Reviewed-on: https://fuchsia-review.googlesource.com/c/tools/+/489445
Fuchsia-Auto-Submit: Anthony Fandrianto <atyfto@google.com>
Commit-Queue: Auto-Submit <auto-submit@fuchsia-infra.iam.gserviceaccount.com>
Reviewed-by: Oliver Newman <olivernewman@google.com>
diff --git a/debugsyms/cmd/bucket.go b/debugsyms/cmd/bucket.go
index 11b3423..658473d 100644
--- a/debugsyms/cmd/bucket.go
+++ b/debugsyms/cmd/bucket.go
@@ -47,7 +47,7 @@
 				Delay:   1 * time.Second,
 				Retries: 3,
 			},
-			Multiplier: 1,
+			Multiplier: 2,
 		}
 	})
 	if err := retry.Retry(ctx, retryPolicy, func() error {