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/2a2c2ad5a29a6473130e7293a4585fbd5d403ee0 [cipd] Don't fail when search result is empty (phosek@google.com)


TBR=borenet@google.com

Recipe-Tryjob-Bypass-Reason: Autoroller
Bugdroid-Send-Email: False
Change-Id: I3828ef85df6e59e7a416a56313c870ac7b796604
Reviewed-on: https://skia-review.googlesource.com/147206
Commit-Queue: Recipe Roller <recipe-roller@chromium.org>
Reviewed-by: Recipe Roller <recipe-roller@chromium.org>

infra/config/recipes.cfg

@@ -14,12 +14,12 @@
   "deps": {
     "depot_tools": {
       "branch": "master",
-      "revision": "52c7211807930272424213ff6127c209de790eca",
+      "revision": "af03ae194f784a9ba5e21e1a9524883482f819b6",
       "url": "https://chromium.googlesource.com/chromium/tools/depot_tools.git"
     },
     "recipe_engine": {
       "branch": "master",
-      "revision": "75244002db7a51d62cabdad873d622b1d8c28434",
+      "revision": "2a2c2ad5a29a6473130e7293a4585fbd5d403ee0",
       "url": "https://chromium.googlesource.com/infra/luci/recipes-py.git"
     }
   },