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/8780808874548276001

depot_tools:
https://chromium.googlesource.com/chromium/tools/depot_tools.git/+/39e668df57c5230298cd1e9b5cbd768bf9450c51
  39e668d (dlf@google.com)
      support cipd describe command in cipd testing

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: If03445101cf34bd4271edb4ea952688c76f7cfaf
Reviewed-on: https://flutter-review.googlesource.com/c/recipes/+/44765
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 ce7fce0..4e26d54 100644
--- a/infra/config/recipes.cfg
+++ b/infra/config/recipes.cfg
@@ -23,7 +23,7 @@
   "deps": {
     "depot_tools": {
       "branch": "refs/heads/main",
-      "revision": "3c7d6f19dc5452899fb1272903fb699487f264ce",
+      "revision": "39e668df57c5230298cd1e9b5cbd768bf9450c51",
       "url": "https://chromium.googlesource.com/chromium/tools/depot_tools.git"
     },
     "fuchsia": {