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.

depot_tools:
  https://crrev.com/86fbe04c663317bf6c07a36ff56c61ffb1605e4b (yiwzhang@google.com)
    Roll bb tool to @ 1ab4441
  https://crrev.com/c4243361bbb66cf940da202ff55fcdd625ae60b1 (maruel@google.com)
    [lucicfg] Update in depot_tools to 1.12.2
  https://crrev.com/851532894fe976bfe62e6c3ba15de4904c6f3121 (ehmaldonado@google.com)
    git-cl: Use scm.GIT.{Get,Set}BranchConfig and {Get,Set}BranchRef instead of git calls.

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

TBR=borenet@google.com

Recipe-Tryjob-Bypass-Reason: Autoroller
Bugdroid-Send-Email: False
Change-Id: I5db643dcab84d037b919a26b78b1b2ebef36b16f
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/271061
Reviewed-by: Recipe Roller <recipe-mega-autoroller@chops-service-accounts.iam.gserviceaccount.com>
Commit-Queue: Recipe Roller <recipe-mega-autoroller@chops-service-accounts.iam.gserviceaccount.com>
diff --git a/infra/config/recipes.cfg b/infra/config/recipes.cfg
index 1992ceff..7ff95d6 100644
--- a/infra/config/recipes.cfg
+++ b/infra/config/recipes.cfg
@@ -14,7 +14,7 @@
   "deps": {
     "depot_tools": {
       "branch": "master",
-      "revision": "ca1907e58b828f85842c78e3560b29d39d54f5f3",
+      "revision": "851532894fe976bfe62e6c3ba15de4904c6f3121",
       "url": "https://chromium.googlesource.com/chromium/tools/depot_tools.git"
     },
     "recipe_engine": {