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/a02505f564d2c8aa60e779669208af89affa58ec [cipd] Update cipd client and vpython 4d19637ec -> 550cea2b9. (vadimsh@chromium.org)
recipe_engine:
  https://crrev.com/359385a94a0912af40d41eccc3fc594e68ddb65e autoroller: Search for gitattributes files only in modified dirs. (ehmaldonado@chromium.org)


TBR=borenet@google.com

Recipe-Tryjob-Bypass-Reason: Autoroller
Bugdroid-Send-Email: False
Change-Id: If71d1013a19856503b813cbdfc6943a6e4afa917
Reviewed-on: https://skia-review.googlesource.com/137429
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": "77094f7feabd1eb8a4ac2447e562628b453e2b77",
+      "revision": "4c50badb2927be575e0985b9361ba0fa5eb71c30",
       "url": "https://chromium.googlesource.com/chromium/tools/depot_tools.git"
     },
     "recipe_engine": {
       "branch": "master",
-      "revision": "6cf964d26783026b01cdcdf8c40b30e9fb0c845d",
+      "revision": "359385a94a0912af40d41eccc3fc594e68ddb65e",
       "url": "https://chromium.googlesource.com/infra/luci/recipes-py.git"
     }
   },