chore: revert minimum ver to Go1.21.0

hainenber · hainenber · commit b024ecda6ed3 · 2024-01-16T23:11:54.000+07:00
Signed-off-by: hainenber &lt;dotronghai96@gmail.com&gt;
diff --git a/go.mod b/go.mod
@@ -1,6 +1,6 @@
 module github.com/grafana/agent
 
-go 1.21.6
+go 1.21.0
 
 require (
 	cloud.google.com/go/pubsub v1.33.0
