Pre-release build for repo:bbsim-sadis-server

makefiles/
internal/
vendor/
---------
  o Update copyright notice ending date.

go.mod
go.sum
vendor/modules.txt
------------------
  o Update dependency voltha-lib-go to v7.5.3
  o make mod-update to regenerate vendor/

Change-Id: Ibda25f0c8de53c5e7c860de2a2e12f506770807e
diff --git a/go.mod b/go.mod
index c53c7a0..e1e6976 100644
--- a/go.mod
+++ b/go.mod
@@ -11,7 +11,7 @@
 require (
 	github.com/gorilla/mux v1.8.0
 	github.com/imdario/mergo v0.3.11 // indirect
-	github.com/opencord/voltha-lib-go/v7 v7.1.3
+	github.com/opencord/voltha-lib-go/v7 v7.5.3
 	gotest.tools v2.2.0+incompatible
 	k8s.io/api v0.19.0
 	k8s.io/apimachinery v0.19.0