gRPC migration

Change-Id: Ib390f6dde0d5a8d6db12ccd7da41135570ad1354
diff --git a/internal/bbsim/types/messageTypes.go b/internal/bbsim/types/messageTypes.go
index e8f367a..361142c 100644
--- a/internal/bbsim/types/messageTypes.go
+++ b/internal/bbsim/types/messageTypes.go
@@ -20,7 +20,7 @@
 	"github.com/google/gopacket"
 	"github.com/opencord/bbsim/internal/bbsim/packetHandlers"
 	"github.com/opencord/omci-lib-go"
-	"github.com/opencord/voltha-protos/v4/go/openolt"
+	"github.com/opencord/voltha-protos/v5/go/openolt"
 	"net"
 )