VOL-4656: Missing PIR field in TrafficShapingInfo for TCONT Type 1
results in TCONT creation failure at openolt agent.

Change-Id: Ic692f7e90fa57cf487cfd9d6324849e22ce49b9a
diff --git a/go.mod b/go.mod
index 9ca9f25..568cba7 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 v7.1.5
+	github.com/opencord/voltha-lib-go/v7 v7.1.6
 	github.com/opencord/voltha-protos/v5 v5.2.2
 	github.com/stretchr/testify v1.7.0
 	go.etcd.io/etcd v3.3.25+incompatible