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/6eaacf24833ebd2565177157d368da33780fced9 Fix repeated test 'mkdir' failure. (dnj@chromium.org)


TBR=iannucci@chromium.org

Recipe-Tryjob-Bypass-Reason: Autoroller
Bugdroid-Send-Email: False
Change-Id: I65d09fa7702f99172a4afae174dcd1236883532a
Reviewed-on: https://chromium-review.googlesource.com/503727
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": "275cbaae0e81a737ff1be9c73049b2cd124388ad",
+      "revision": "6eaacf24833ebd2565177157d368da33780fced9",
       "url": "https://chromium.googlesource.com/external/github.com/luci/recipes-py.git"
     }
   },