[VOL-4290] Voltha go library updates for gRPC migration

Change-Id: I1aa2774beb6b7ed7419bc45aeb53fcae8a8ecda0
diff --git a/pkg/db/backend.go b/pkg/db/backend.go
index 431970d..2e57a27 100644
--- a/pkg/db/backend.go
+++ b/pkg/db/backend.go
@@ -23,8 +23,8 @@
 	"sync"
 	"time"
 
-	"github.com/opencord/voltha-lib-go/v6/pkg/db/kvstore"
-	"github.com/opencord/voltha-lib-go/v6/pkg/log"
+	"github.com/opencord/voltha-lib-go/v7/pkg/db/kvstore"
+	"github.com/opencord/voltha-lib-go/v7/pkg/log"
 	"google.golang.org/grpc/codes"
 	"google.golang.org/grpc/status"
 )