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.
recipe_engine:
  https://crrev.com/5cdf9803d55420f3ae8d2e0dd524bc2de9c7284b Minor loader improvements. (iannucci@chromium.org)


TBR=iannucci@chromium.org

Recipe-Tryjob-Bypass-Reason: Autoroller
Bugdroid-Send-Email: False
Change-Id: I78b363129b588b775b5660312a48d57ca6592111
Reviewed-on: https://chromium-review.googlesource.com/497598
Reviewed-by: <recipe-roller@chromium.org>
Commit-Queue: <recipe-roller@chromium.org>

infra/config/recipes.cfg

@@ -15,7 +15,7 @@
   "deps": {
     "recipe_engine": {
       "branch": "master",
-      "revision": "2dc658ad29ce38a0364540d85d05dc3a2ab87f16",
+      "revision": "5cdf9803d55420f3ae8d2e0dd524bc2de9c7284b",
       "url": "https://chromium.googlesource.com/external/github.com/luci/recipes-py.git"
     }
   },