Update go.mod dependencies
--------------------------

go.mod
go.sum
vendor/modules.txt
------------------
  o Update voltha-lib-go to v7.4.5
  o Update voltha-protos to v5.4.11

vendor/
-------
  o Invoke make mod-update to refresh dependencies in vendor/ source.

Change-Id: Icf196fd23ddeaf3c203f116610b4acfc518cd474
diff --git a/go.mod b/go.mod
index a639257..057dd40 100644
--- a/go.mod
+++ b/go.mod
@@ -17,8 +17,8 @@
 	github.com/grpc-ecosystem/go-grpc-middleware v1.3.0
 	github.com/looplab/fsm v0.2.0
 	github.com/opencord/omci-lib-go/v2 v2.2.3
-	github.com/opencord/voltha-lib-go/v7 v7.4.5
-	github.com/opencord/voltha-protos/v5 v5.4.10
+	github.com/opencord/voltha-lib-go/v7 v7.5.3
+	github.com/opencord/voltha-protos/v5 v5.4.11
 	github.com/stretchr/testify v1.7.0
 	google.golang.org/grpc v1.44.0
 )