Roll recipe dependencies (trivial).

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

The build that created this CL was
https://ci.chromium.org/b/8754072194066967777

depot_tools:
https://chromium.googlesource.com/chromium/tools/depot_tools.git/+log/1a4a96ccdc3a30d0407c3f3962d05a4047890bc9~..78bef266ac91475b66a2e91890a1cfc111ccee4b
  1a4a96c (bentekkie@google.com)
      Add link to documentation if reproxy fails to start
  3c79cfc (miersh@google.com)
      Revert "Reland "Add support for GCS deps""
  78bef26 (akhoroshilov@brave.com)
      Display diff on `git cl format --diff` when formatting Java files.

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: Ib662d30aaa4cb9438f6a37701fc250682aac5f7c
Reviewed-on: https://flutter-review.googlesource.com/c/recipes/+/55882
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>
diff --git a/infra/config/recipes.cfg b/infra/config/recipes.cfg
index bdc9e90..dfdd20c 100644
--- a/infra/config/recipes.cfg
+++ b/infra/config/recipes.cfg
@@ -22,12 +22,12 @@
   "deps": {
     "dart": {
       "branch": "refs/heads/main",
-      "revision": "d7b06afbfbdd3975feaf3063f9897f8a9e7a8b34",
+      "revision": "b28aea987fc08112d56477e4c61e834dd4b6a159",
       "url": "https://dart.googlesource.com/recipes.git"
     },
     "depot_tools": {
       "branch": "refs/heads/main",
-      "revision": "a839eed78e0fb1d3d043f79177a43438295402c1",
+      "revision": "78bef266ac91475b66a2e91890a1cfc111ccee4b",
       "url": "https://chromium.googlesource.com/chromium/tools/depot_tools.git"
     },
     "fuchsia": {