Roll recipe dependencies (trivial).

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

The build that created this CL was
https://ci.chromium.org/b/8765062227904842657

dart:
https://dart.googlesource.com/recipes.git/+/e8097168593bdced0eb4cd0e0ccbe7cedf419e4d
  e809716 (whesse@google.com)
      Remove use of step.defer_results from test results step

Please check the following references for more information:
- autoroller, https://chromium.googlesource.com/infra/luci/recipes-py/+/main/doc/workflow.md#autoroller
- rollback, https://chromium.googlesource.com/infra/luci/recipes-py/+/main/doc/workflow.md#rollback
- cross-repo dependencies, https://chromium.googlesource.com/infra/luci/recipes-py/+/main/doc/cross_repo.md

Use https://goo.gl/noib3a to file a bug.

R=flutter-infra@grotations.appspotmail.com

Recipe-Tryjob-Bypass-Reason: Autoroller
Ignore-Freeze: Autoroller
Bugdroid-Send-Email: False
Change-Id: Ic99118b6d7d7bf037c77eb71f39869d2f3b9f855
Reviewed-on: https://flutter-review.googlesource.com/c/recipes/+/52200
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 774eec8..f8b4a51 100644
--- a/infra/config/recipes.cfg
+++ b/infra/config/recipes.cfg
@@ -22,7 +22,7 @@
   "deps": {
     "dart": {
       "branch": "refs/heads/main",
-      "revision": "05684b9c3312277e3111f8d162ef26c516c78cd5",
+      "revision": "e8097168593bdced0eb4cd0e0ccbe7cedf419e4d",
       "url": "https://dart.googlesource.com/recipes.git"
     },
     "depot_tools": {