Roll recipe dependencies (trivial).

This is an automated CL created by the recipe roller. This CL rolls recipe
changes from upstream projects (e.g. depot_tools) into downstream projects
(e.g. tools/build).


More info is at https://goo.gl/zkKdpD. Use https://goo.gl/noib3a to file a bug.
depot_tools:
  https://crrev.com/9185e4495d6d17e1ee27313fffdaaf6ca50060ca depot_tools: Make scm Python 3 compatible. (ehmaldonado@chromium.org)
  https://crrev.com/a151265d61bb7c75a480da1c78b9e332b4576609 Make presubmit emit a warning when it can't find the desired luci config set. (jbudorick@chromium.org)


TBR=borenet@google.com

Recipe-Tryjob-Bypass-Reason: Autoroller
Bugdroid-Send-Email: False
Change-Id: I0dd6ad260416132ee59237003cc6538a5872498c
Reviewed-on: https://skia-review.googlesource.com/c/buildbot/+/234611
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 7a07a4a..7d1b0ac 100644
--- a/infra/config/recipes.cfg
+++ b/infra/config/recipes.cfg
@@ -14,7 +14,7 @@
   "deps": {
     "depot_tools": {
       "branch": "master",
-      "revision": "979fa780ce2f41fe9a3d89d74d9e8e69f88cd71d",
+      "revision": "a151265d61bb7c75a480da1c78b9e332b4576609",
       "url": "https://chromium.googlesource.com/chromium/tools/depot_tools.git"
     },
     "recipe_engine": {