Roll recipe dependencies (trivial).

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

The build that created this CL was
https://ci.chromium.org/b/8698947713055486433

dart:
https://dart.googlesource.com/recipes.git/+/7493d595dee110a230a135a62fdd81c9127f242f
  7493d59 (iinozemtsev@google.com)
      Update release schedule

depot_tools:
https://chromium.googlesource.com/chromium/tools/depot_tools.git/+/ba27c7d48d01e6d92bd858882202655d7b1d6b4a
  ba27c7d (ayatane@chromium.org)
      Roll git-credential-luci

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-notify+luci-recipes@google.com

Recipe-Tryjob-Bypass-Reason: Autoroller
Ignore-Freeze: Autoroller
Bugdroid-Send-Email: False
Change-Id: I9280b1271db57c68238e9263b1778db7fecde258
Reviewed-on: https://flutter-review.googlesource.com/c/recipes/+/72200
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>