VOL-3506 Handle ofp_error_msg in ofagent

Change-Id: Ib5d420d6cfbffc2acd0d98010818ae5ff675bb44
diff --git a/go.mod b/go.mod
index 53b157d..fae6bb3 100644
--- a/go.mod
+++ b/go.mod
@@ -8,7 +8,7 @@
 	github.com/grpc-ecosystem/go-grpc-middleware v1.0.1-0.20190118093823-f849b5445de4
 	github.com/opencord/goloxi v1.0.1
 	github.com/opencord/voltha-lib-go/v4 v4.0.2
-	github.com/opencord/voltha-protos/v4 v4.0.2
+	github.com/opencord/voltha-protos/v4 v4.0.7
 	github.com/opentracing/opentracing-go v1.2.0 // indirect
 	github.com/stretchr/testify v1.4.0
 	golang.org/x/net v0.0.0-20191112182307-2180aed22343