updating voltha-lib-go for VOL-4994

Change-Id: Ic6275762212d895bfaa7eb295ee0d9d09fdf29ae
diff --git a/vendor/modules.txt b/vendor/modules.txt
index 5a32d1c..8fafeca 100644
--- a/vendor/modules.txt
+++ b/vendor/modules.txt
@@ -231,7 +231,7 @@
 github.com/modern-go/concurrent
 # github.com/modern-go/reflect2 v1.0.1
 github.com/modern-go/reflect2
-# github.com/opencord/voltha-lib-go/v7 v7.4.2
+# github.com/opencord/voltha-lib-go/v7 v7.4.3
 ## explicit
 github.com/opencord/voltha-lib-go/v7/pkg/adapters/common
 github.com/opencord/voltha-lib-go/v7/pkg/config