Change version to 1.12.2
diff --git a/rpc_util.go b/rpc_util.go
index f977cb6..5de1b03 100644
--- a/rpc_util.go
+++ b/rpc_util.go
@@ -722,6 +722,6 @@
 )
 
 // Version is the current grpc version.
-const Version = "1.12.2-dev"
+const Version = "1.12.2"
 
 const grpcUA = "grpc-go/" + Version