[Autoroll] Add more artifacts to wait for in Engine->Flutter roller

Bug: skia:8885
Change-Id: I6999266f87292d6e66398809492b7bd9d9a5a43f
Reviewed-on: https://skia-review.googlesource.com/c/buildbot/+/202126
Reviewed-by: Ravi Mistry <rmistry@google.com>
Commit-Queue: Ravi Mistry <rmistry@google.com>
diff --git a/autoroll/config/flutter-engine-flutter.json b/autoroll/config/flutter-engine-flutter.json
index 91f6642..d930a96 100644
--- a/autoroll/config/flutter-engine-flutter.json
+++ b/autoroll/config/flutter-engine-flutter.json
@@ -37,7 +37,9 @@
       "flutter/%s/android-javadoc.zip",
       "flutter/%s/dart-sdk-linux-x64.zip",
       "flutter/%s/dart-sdk-darwin-x64.zip",
-      "flutter/%s/dart-sdk-windows-x64.zip"
+      "flutter/%s/dart-sdk-windows-x64.zip",
+      "flutter/%s/ios-objcdoc.zip",
+      "flutter/%s/ios/artifacts.zip"
     ]
   },
   "kubernetes": {