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
(or complain)

build:
  https://crrev.com/3b96eccc03f1e5ab9efa74b1afdfb5edc8c5feb0 Roll recipe dependencies (trivial). (recipe-roller@chromium.org)
depot_tools:
  https://crrev.com/c958da49797facf429100595bceb4c49e8c94cd3 Switch bot_update to use exponential backoff on clone (agable@chromium.org)

TBR=martiniss@chromium.org,phajdan.jr@chromium.org
BUG=472386

Recipe-Tryjob-Bypass-Reason: Autoroller
Bugdroid-Send-Email: False
Review-Url: https://codereview.chromium.org/2326953002
Cr-Commit-Position: refs/heads/master@{#417486}

infra/config/recipes.cfg

@@ -5,13 +5,13 @@ deps {
   project_id: "build"
   url: "https://chromium.googlesource.com/chromium/tools/build.git"
   branch: "master"
-  revision: "026e0bb03aa139c5c43be38dd37d1f2f33e90c03"
+  revision: "3b96eccc03f1e5ab9efa74b1afdfb5edc8c5feb0"
 }
 deps {
   project_id: "depot_tools"
   url: "https://chromium.googlesource.com/chromium/tools/depot_tools.git"
   branch: "master"
-  revision: "3dd7436899f87b0bb1538b43c4332e327fd70a98"
+  revision: "c958da49797facf429100595bceb4c49e8c94cd3"
 }
 deps {
   project_id: "recipe_engine"