Roll recipe dependencies (trivial).

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

The build that created this CL was
https://ci.chromium.org/b/8772473849400963233

depot_tools:
https://chromium.googlesource.com/chromium/tools/depot_tools.git/+log/4e6c1071bd30c1f3b51f0541b59685cb2384d8ad~..15fcccb6a292da309a00defc845fb007fea3c52f
  4e6c107 (jojwang@google.com)
      Unset diff.ignoreSubmodules=all when running gclient sync.
  15fcccb (drewroen@google.com)
      Revert "[gsutil] Update gsutil error message on outdated boto"

fuchsia:
https://fuchsia.googlesource.com/infra/recipes.git/+/590cdbad47cbbe1cd87ccfbffbad71a5750ff17c
  590cdba (olivernewman@google.com)
      [shac] Emit robot comments

Please check the following references for more information:
- autoroller, https://chromium.googlesource.com/infra/luci/recipes-py/+/main/doc/workflow.md#autoroller
- rollback, https://chromium.googlesource.com/infra/luci/recipes-py/+/main/doc/workflow.md#rollback
- cross-repo dependencies, https://chromium.googlesource.com/infra/luci/recipes-py/+/main/doc/cross_repo.md

Use https://goo.gl/noib3a to file a bug.

R=flutter-infra@grotations.appspotmail.com

Recipe-Tryjob-Bypass-Reason: Autoroller
Ignore-Freeze: Autoroller
Bugdroid-Send-Email: False
Change-Id: I476350e9ac7c666f8b41cd9b2fd5432fc5ff5a29
Reviewed-on: https://flutter-review.googlesource.com/c/recipes/+/49703
Bot-Commit: 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>