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/e989bb2b45797c359c911eb13806946085579352 Make git-nav-upstream use the upstream branch name (leszeks@chromium.org)
recipe_engine:
  https://crrev.com/c8d755745eb947ba80699604b6e747a6a3047916 Fix incorrect comment. (garymm@google.com)
  https://crrev.com/4b03702efa1413999e5ecd2e3f80a032936667ba Fix docstring for post_process.PropertiesDoNotContain (erikchen@chromium.org)


TBR=borenet@google.com

Recipe-Tryjob-Bypass-Reason: Autoroller
Bugdroid-Send-Email: False
Change-Id: I73a43324a2ff9f658b172d833278099ee06fff5b
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/204580
Reviewed-by: Recipe Roller <recipe-mega-autoroller@chops-service-accounts.iam.gserviceaccount.com>
Commit-Queue: Recipe Roller <recipe-mega-autoroller@chops-service-accounts.iam.gserviceaccount.com>

infra/config/recipes.cfg

@@ -14,12 +14,12 @@
   "deps": {
     "depot_tools": {
       "branch": "master",
-      "revision": "51c0f388a154eb0e3c10ce6db73ad7aa128a9238",
+      "revision": "4960c0dabd65428f93f381878f694ea5eeb09017",
       "url": "https://chromium.googlesource.com/chromium/tools/depot_tools.git"
     },
     "recipe_engine": {
       "branch": "master",
-      "revision": "5c579aefde72744956934c8805273cd43f53cd1d",
+      "revision": "4b03702efa1413999e5ecd2e3f80a032936667ba",
       "url": "https://chromium.googlesource.com/infra/luci/recipes-py.git"
     }
   },