[VOL-3287] Updating voltha-lib-go dependecy to fix GPON constant issue

Change-Id: I6b7a054dc2e1acd610a8940f05fcecbaaf680346
diff --git a/go.mod b/go.mod
index dd9b888..606a766 100755
--- a/go.mod
+++ b/go.mod
@@ -7,7 +7,7 @@
 	github.com/cenkalti/backoff/v3 v3.1.1
 	github.com/gogo/protobuf v1.3.1
 	github.com/golang/protobuf v1.3.2
-	github.com/opencord/voltha-lib-go/v3 v3.1.20
+	github.com/opencord/voltha-lib-go/v3 v3.1.22
 	github.com/opencord/voltha-protos/v3 v3.3.9
 	go.etcd.io/etcd v0.0.0-20190930204107-236ac2a90522
 	google.golang.org/grpc v1.25.1