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/75531d6efd34f77b10639ff0de4b4f30c1e0b399 [depgraph] Remove depgraph subcommand for now. (iannucci@chromium.org)
  https://crrev.com/838b3f5e34449d890b5f87bc26a09977cc8eb4db [refs] Remove refs subcommand. (iannucci@chromium.org)
  https://crrev.com/1d38252917f68e1d02b1595c91b4c5cb0b44d0f5 [fetch] Remove the fetch subcommand. (iannucci@chromium.org)


TBR=borenet@google.com

Recipe-Tryjob-Bypass-Reason: Autoroller
Bugdroid-Send-Email: False
Change-Id: Ib92a86cdcedd7983199631cb4a0a51f5ef3da4f4
Reviewed-on: https://skia-review.googlesource.com/c/187660
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": "9f5b861c32e0a7389f34781c002a71212e5bc924",
+      "revision": "50749bef7147849fe60b2f0aac9c8d06180c6c25",
       "url": "https://chromium.googlesource.com/chromium/tools/depot_tools.git"
     },
     "recipe_engine": {
       "branch": "master",
-      "revision": "94a9f6cfac2c3b993d28b8ef0e4c510f1528fbd8",
+      "revision": "1d38252917f68e1d02b1595c91b4c5cb0b44d0f5",
       "url": "https://chromium.googlesource.com/infra/luci/recipes-py.git"
     }
   },