updating voltha-lib-go for VOL-4994

Change-Id: Ie9db111b41ce3182b351c511a7e714a2c50f593f
diff --git a/go.mod b/go.mod
index 407b5fc..cd90b8d 100644
--- a/go.mod
+++ b/go.mod
@@ -13,7 +13,7 @@
 	github.com/gogo/protobuf v1.3.2
 	github.com/golang/protobuf v1.5.2
 	github.com/grpc-ecosystem/go-grpc-middleware v1.3.0
-	github.com/opencord/voltha-lib-go/v7 v7.4.2
+	github.com/opencord/voltha-lib-go/v7 v7.4.3
 	github.com/opencord/voltha-protos/v5 v5.4.6
 	github.com/stretchr/testify v1.7.0
 	go.etcd.io/etcd v3.3.25+incompatible