Update dependencies

vendor/tailscale.com/derp/derphttp/websocket.go

@@ -1,7 +1,7 @@
 // Copyright (c) Tailscale Inc & AUTHORS
 // SPDX-License-Identifier: BSD-3-Clause
 
-//go:build linux || js
+//go:build js || ((linux || darwin) && ts_debug_websockets)
 
 package derphttp
 
@@ -14,6 +14,8 @@ import (
 	"tailscale.com/net/wsconn"
 )
 
+const canWebsockets = true
+
 func init() {
 	dialWebsocketFunc = dialWebsocket
 }