Roll recipe dependencies (trivial).

This is an automated CL created by the recipe roller. This CL rolls
recipe changes from upstream projects (depot_tools) into this repository.

The build that created this CL was
https://ci.chromium.org/b/8813594401961165937

depot_tools:
https://chromium.googlesource.com/chromium/tools/depot_tools.git/+log/471b5497d6f7f78adf55cff5d9109c58b10ac42b~..2f988479fb9e31a59f935054d5f230748ed526f4
  471b549 (chanli@chromium.org)
      roll dirmd
  0e9a7d2 (sokcevic@google.com)
      Revert "Add iannucci to depot_tools owners"
  2f98847 (dsanders11@ucsbalum.com)
      cpplint: improve root path for header guard behavior

More info is at https://goo.gl/zkKdpD. Use https://goo.gl/noib3a to file a bug.

R=fujino@google.com

Recipe-Tryjob-Bypass-Reason: Autoroller
Bugdroid-Send-Email: False
Change-Id: I33a2ab4a760efd5d2865d037c3e0f6ec4f966f7b
Reviewed-on: https://flutter-review.googlesource.com/c/recipes/+/30451
Bot-Commit: flutter-prod-builder@chops-service-accounts.iam.gserviceaccount.com <flutter-prod-builder@chops-service-accounts.iam.gserviceaccount.com>
Commit-Queue: flutter-prod-builder@chops-service-accounts.iam.gserviceaccount.com <flutter-prod-builder@chops-service-accounts.iam.gserviceaccount.com>
diff --git a/infra/config/recipes.cfg b/infra/config/recipes.cfg
index e126f47..823b2f9 100644
--- a/infra/config/recipes.cfg
+++ b/infra/config/recipes.cfg
@@ -25,7 +25,7 @@
   "deps": {
     "depot_tools": {
       "branch": "refs/heads/main",
-      "revision": "cf9a77671386713037eeed5c62a8f0a10b25a07e",
+      "revision": "2f988479fb9e31a59f935054d5f230748ed526f4",
       "url": "https://chromium.googlesource.com/chromium/tools/depot_tools.git"
     },
     "fuchsia": {