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.
depot_tools:
  https://crrev.com/51eca59ff6a7ce5dc4b7aecc9c65e956d38dab2f Support --enable-auto-submit in `git cl split` (tikuta@chromium.org)
recipe_engine:
  https://crrev.com/feac5f657c68d422c5209da0b47e5f5e74cbeac4 Add recipe API for the buildbucket collect subcommand (sergiyb@chromium.org)


TBR=borenet@google.com

Recipe-Tryjob-Bypass-Reason: Autoroller
Bugdroid-Send-Email: False
Change-Id: I9ade827287dfc91aa57f091a04bb9b50deb980ca
Reviewed-on: https://skia-review.googlesource.com/c/192685
Reviewed-by: Recipe Roller <recipe-roller@chromium.org>
Commit-Queue: Recipe Roller <recipe-roller@chromium.org>

infra/config/recipes.cfg

@@ -14,12 +14,12 @@
   "deps": {
     "depot_tools": {
       "branch": "master",
-      "revision": "452a49f4b699fc71396221d9e36072e6ff1a9d46",
+      "revision": "51eca59ff6a7ce5dc4b7aecc9c65e956d38dab2f",
       "url": "https://chromium.googlesource.com/chromium/tools/depot_tools.git"
     },
     "recipe_engine": {
       "branch": "master",
-      "revision": "4a4b3854779841cdbd8f2ebba9adddde9a10ae41",
+      "revision": "feac5f657c68d422c5209da0b47e5f5e74cbeac4",
       "url": "https://chromium.googlesource.com/infra/luci/recipes-py.git"
     }
   },