Roll recipe dependencies (trivial).

This is an automated CL created by the recipe roller. This CL rolls recipe
changes from upstream projects (build) into this repository.

build:
  https://crrev.com/9fa56c8fea0ef3365d8cc870f1fd87f1c08e7eec (kimstephanie@google.com)
    Add public official builders
  https://crrev.com/4bac0696550e104397f7e1fef8c9eb288ec783d2 (kimstephanie@google.com)
    Revert "Add public official builders"

More info is at https://goo.gl/zkKdpD. Use https://goo.gl/noib3a to file a bug.

TBR=godofredoc@google.com, keyonghan@google.com, wutong@google.com

Recipe-Tryjob-Bypass-Reason: Autoroller
Bugdroid-Send-Email: False
Change-Id: Ibcb2978f0fdae460afb4f28c0289170ef78781e3
Reviewed-on: https://flutter-review.googlesource.com/c/recipes/+/3584
Reviewed-by: flutter-prod-builder@chops-service-accounts.iam.gserviceaccount.com <flutter-prod-builder@chops-service-accounts.iam.gserviceaccount.com>
Commit-Queue: flutter-prod-builder@chops-service-accounts.iam.gserviceaccount.com <flutter-prod-builder@chops-service-accounts.iam.gserviceaccount.com>