[VOL-1348] EPON tech profile support

Change-Id: I5dfbc17fe6787f255d22d0b5d640bc636bfb172d
diff --git a/vendor/modules.txt b/vendor/modules.txt
index 2b9c41a..af2b034 100644
--- a/vendor/modules.txt
+++ b/vendor/modules.txt
@@ -67,7 +67,7 @@
 github.com/mitchellh/go-homedir
 # github.com/mitchellh/mapstructure v1.1.2
 github.com/mitchellh/mapstructure
-# github.com/opencord/voltha-lib-go/v3 v3.1.19
+# github.com/opencord/voltha-lib-go/v3 v3.1.20
 github.com/opencord/voltha-lib-go/v3/pkg/adapters
 github.com/opencord/voltha-lib-go/v3/pkg/adapters/adapterif
 github.com/opencord/voltha-lib-go/v3/pkg/adapters/common