roll: gn

From: git_revision:5e19d2fb166fbd4f6f32147fbb2f497091a54ad8
To: git_revision:84c8431f3e03cc6226c59dd49637c15ea31169a1

CQ-Do-Not-Cancel-Tryjobs: true
Build-Errors: continue
Roller-URL: https://ci.chromium.org/b/8789970674741398785
CQ-Do-Not-Cancel-Tryjobs: true
Change-Id: I47a0b652d59c8cbb44c713fa736f025bed90beb4
Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/127710
Bot-Commit: 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 349af4a..620b38e 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
@@ -10,7 +10,7 @@
         "windows-amd64"
       ],
       "tags": [
-        "git_revision:5e19d2fb166fbd4f6f32147fbb2f497091a54ad8"
+        "git_revision:84c8431f3e03cc6226c59dd49637c15ea31169a1"
       ],
       "version_file": ".versions/gn.cipd_version"
     },