Roll recipe dependencies (trivial).

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

build:
  https://crrev.com/a5405dfa01532396e502e622bd1132e633f3a812 (apotapchuk@chromium.org)
    Revert "Cleanup old scripts/slave files"
depot_tools:
  https://crrev.com/fbd2c6337c39b7db500b3a22d4ea7f84f0ba9e61 (benmason@chromium.org)
    Revert "Add GCLIENT_DEP_REF env var for recurse command"

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

TBR=godofredoc@google.com

Recipe-Tryjob-Bypass-Reason: Autoroller
Bugdroid-Send-Email: False
Change-Id: I9ff142632afb8b91e038c2b6b2ceb45acba9b920
Reviewed-on: https://flutter-review.googlesource.com/c/recipes/+/3787
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>