roll: go

From: version:2@1.21.2
To: version:2@1.21.3
Roller-URL: https://ci.chromium.org/b/8767082292939184497
CQ-Do-Not-Cancel-Tryjobs: true
Change-Id: I40ca822b4b4bbb7bfd7489e2483c14f37928b08e
Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/176112
Bot-Commit: Pigweed Roller <pigweed-roller@pigweed-service-accounts.iam.gserviceaccount.com>
Commit-Queue: Pigweed Roller <pigweed-roller@pigweed-service-accounts.iam.gserviceaccount.com>
diff --git a/pw_env_setup/py/pw_env_setup/cipd_setup/go.json b/pw_env_setup/py/pw_env_setup/cipd_setup/go.json
index 89bc9ba..5bc9f70 100644
--- a/pw_env_setup/py/pw_env_setup/cipd_setup/go.json
+++ b/pw_env_setup/py/pw_env_setup/cipd_setup/go.json
@@ -10,7 +10,7 @@
         "windows-amd64"
       ],
       "tags": [
-        "version:2@1.21.2"
+        "version:2@1.21.3"
       ]
     },
     {