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/d6c4a597be2da8be7971b4d5f66e3d95e8fc325c [recipes.py] refactor PackageContext to remove --no-fetch logic. (iannucci@chromium.org)


TBR=iannucci@chromium.org

Recipe-Tryjob-Bypass-Reason: Autoroller
Bugdroid-Send-Email: False
Change-Id: Id973ff1bd5d0cab2336bf1764acf8bb0d6381251
Reviewed-on: https://chromium-review.googlesource.com/499509
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": "92c5b73ff81fb30c80a33bab91be51551d5e67b7",
+      "revision": "d6c4a597be2da8be7971b4d5f66e3d95e8fc325c",
       "url": "https://chromium.googlesource.com/external/github.com/luci/recipes-py.git"
     }
   },