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/51f0cd392cab5737cb444b9eef8700fcd4713ea0 [recipes] Remove deprecated (ignored) --use-bootstrap flag (iannucci@chromium.org)
recipe_engine:
  https://crrev.com/d7bf17e6450a8aef49e08d4dfcac10b2bb558b8d [arguments.proto] Regenerate pb2. (iannucci@chromium.org)
  https://crrev.com/d4166b614aaea6fd574864a6b16b0363156a1720 Remove unused emit_timestamp flag. (iannucci@chromium.org)
  https://crrev.com/53e9006fc399f37445a3b3a3ec4779eb3ce3306f Remove use of op_args.annotation_flags.emit_initial_properties. (iannucci@chromium.org)


TBR=borenet@google.com

Recipe-Tryjob-Bypass-Reason: Autoroller
Bugdroid-Send-Email: False
Change-Id: I48e5021e49e9ade82b75a93a34892946a47fd362
Reviewed-on: https://skia-review.googlesource.com/c/183391
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": "f7854e9f3fbb3400c6d605e7aca0a822e37d84a9",
+      "revision": "8432ec24a32617322cae39cfbf3137933e5e49fb",
       "url": "https://chromium.googlesource.com/chromium/tools/depot_tools.git"
     },
     "recipe_engine": {
       "branch": "master",
-      "revision": "c1607f6eed6444c4918856cfc4bdabf895d4504c",
+      "revision": "53e9006fc399f37445a3b3a3ec4779eb3ce3306f",
       "url": "https://chromium.googlesource.com/infra/luci/recipes-py.git"
     }
   },