[VOL-5245] -- release patch

VERSION
go.mod
go.sum
vendor/modules.txt
------------------
  o Update release branch version of voltha-protos to v5.4.11
  o make mod-update regenerated go.sum and vendor/modules.txt

Change-Id: If1272caafec5a80810c5f63b3afcaa9e9d112e32
diff --git a/go.mod b/go.mod
index 3d5052e..879276a 100644
--- a/go.mod
+++ b/go.mod
@@ -34,7 +34,7 @@
 	github.com/jhump/protoreflect v1.10.2
 	github.com/jonboulle/clockwork v0.2.2 // indirect
 	github.com/onsi/gomega v1.14.0 // indirect
-	github.com/opencord/voltha-protos/v5 v5.4.10
+	github.com/opencord/voltha-protos/v5 v5.4.11
 	github.com/opentracing/opentracing-go v1.2.0
 	github.com/phayes/freeport v0.0.0-20180830031419-95f893ade6f2
 	github.com/prometheus/client_golang v1.11.0