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)

recipe_engine:
  https://crrev.com/2b31483ac5f58781c138af391a35ccf3a3f63245 shutil recipe_module: port chromium_utils rmtree implementation. (tandrii@chromium.org)

R=martiniss@chromium.org,tandrii@chromium.org
BUG=584783

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

Review-Url: https://codereview.chromium.org/2135383006

infra/config/recipes.cfg

@@ -5,5 +5,5 @@ deps {
   project_id: "recipe_engine"
   url: "https://chromium.googlesource.com/external/github.com/luci/recipes-py.git"
   branch: "master"
-  revision: "c3683107b331a0f9f0392c0a376ecf8143b1e2ac"
+  revision: "2b31483ac5f58781c138af391a35ccf3a3f63245"
 }