roll: gn

From: git_revision:14c9f9461f3571b4c214bf65fd7382bcacfbc6eb
To: git_revision:207400cee176a4f71c3b595ae880dc62cd632c06

CQ-Do-Not-Cancel-Tryjobs: true
Change-Id: I3da071081e972fbda2c41bcfc522c93cba65b428
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 8efb706..ba59fdb 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}",
     "tags": [
-      "git_revision:14c9f9461f3571b4c214bf65fd7382bcacfbc6eb"
+      "git_revision:207400cee176a4f71c3b595ae880dc62cd632c06"
     ]
   },
   {