go.mod+lnrpc+github: point to latest kvdb changes

Use kvdb package v1.4.1. This update also forced the protobuf version to
be bumped which required `make rpc` to be run to update the generated
files. This also required a bump in the github pinned dependencies
config for the grpc and protobuf libs.

lncfg/db.go

@@ -8,6 +8,7 @@ import (
 	"github.com/lightningnetwork/lnd/kvdb"
 	"github.com/lightningnetwork/lnd/kvdb/etcd"
 	"github.com/lightningnetwork/lnd/kvdb/postgres"
+	"github.com/lightningnetwork/lnd/kvdb/sqlbase"
 	"github.com/lightningnetwork/lnd/lnwallet/btcwallet"
 )
 
@@ -142,7 +143,7 @@ func (db *DB) Init(ctx context.Context, dbPath string) error {
 		db.Etcd = cfg
 
 	case db.Backend == PostgresBackend:
-		postgres.Init(db.Postgres.MaxConnections)
+		sqlbase.Init(db.Postgres.MaxConnections)
 	}
 
 	return nil