Upgrade tfo-go

inbound/default_tcp.go

@@ -11,8 +11,7 @@ import (
 	E "github.com/sagernet/sing/common/exceptions"
 	M "github.com/sagernet/sing/common/metadata"
 	N "github.com/sagernet/sing/common/network"
-
-	"github.com/database64128/tfo-go/v2"
+	"github.com/sagernet/tfo-go"
 )
 
 func (a *myInboundAdapter) ListenTCP() (net.Listener, error) {