roll: gn

From: git_revision:64b3b9401c1c3ed5f3c43c1cac00b91f83597ab8
To: git_revision:b2e3d8622c1ce1bd853c7a11f62a739946669cdd

CQ-Do-Not-Cancel-Tryjobs: true
Roller-URL: https://ci.chromium.org/b/8851539408596921392
Cq-Cl-Tag: roller-builder:gn-roller
Cq-Cl-Tag: roller-bid:8851539408596921392
CQ-Do-Not-Cancel-Tryjobs: true
Change-Id: Ie0fab271c6b1573fada6e0defff6d72a0880f6c7
Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/39422
Reviewed-by: Pigweed Roller <pigweed-roller@pigweed.google.com.iam.gserviceaccount.com>
Commit-Queue: Pigweed Roller <pigweed-roller@pigweed.google.com.iam.gserviceaccount.com>
diff --git a/pw_env_setup/py/pw_env_setup/cipd_setup/pigweed.json b/pw_env_setup/py/pw_env_setup/cipd_setup/pigweed.json
index ad8590c..3c9f487 100644
--- a/pw_env_setup/py/pw_env_setup/cipd_setup/pigweed.json
+++ b/pw_env_setup/py/pw_env_setup/cipd_setup/pigweed.json
@@ -2,7 +2,7 @@
   {
     "path": "gn/gn/${os}-${arch=amd64,arm64}",
     "tags": [
-      "git_revision:64b3b9401c1c3ed5f3c43c1cac00b91f83597ab8"
+      "git_revision:b2e3d8622c1ce1bd853c7a11f62a739946669cdd"
     ]
   },
   {