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/b5cecfe7c5a9684ea21d08599cbcc85a419dd190 Roll recipe dependencies (trivial). (recipe-roller@chromium.org)
depot_tools:
  https://crrev.com/a3f10315eb5597be73cdfc1a4a1145fe3cc3b541 Roll recipe dependencies (trivial). (recipe-roller@chromium.org)
recipe_engine:
  https://crrev.com/825386b5d616ed1e5fca94ec76eb6de9335b86d2 Add astunparse and update_vendoring. (iannucci@chromium.org)

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

Recipe-Tryjob-Bypass-Reason: Autoroller
Bugdroid-Send-Email: False
Review-Url: https://codereview.chromium.org/2400843002
Cr-Commit-Position: refs/heads/master@{#423736}

infra/config/recipes.cfg

@@ -5,17 +5,17 @@ deps {
   project_id: "build"
   url: "https://chromium.googlesource.com/chromium/tools/build.git"
   branch: "master"
-  revision: "fecd39cfc57157898353120c65b5d3e054451cb8"
+  revision: "b5cecfe7c5a9684ea21d08599cbcc85a419dd190"
 }
 deps {
   project_id: "depot_tools"
   url: "https://chromium.googlesource.com/chromium/tools/depot_tools.git"
   branch: "master"
-  revision: "221ab25f46ce6469c7b00e080751428c94316552"
+  revision: "a3f10315eb5597be73cdfc1a4a1145fe3cc3b541"
 }
 deps {
   project_id: "recipe_engine"
   url: "https://chromium.googlesource.com/external/github.com/luci/recipes-py.git"
   branch: "master"
-  revision: "36a1da1369c83f0754989e6f5a24b1b49f6898c9"
+  revision: "825386b5d616ed1e5fca94ec76eb6de9335b86d2"
 }