Update dependencies

vendor/tailscale.com/wgengine/watchdog_js.go

@@ -0,0 +1,17 @@
+// Copyright (c) Tailscale Inc & AUTHORS
+// SPDX-License-Identifier: BSD-3-Clause
+
+//go:build js
+
+package wgengine
+
+import "tailscale.com/net/dns/resolver"
+
+type watchdogEngine struct {
+	Engine
+	wrap Engine
+}
+
+func (e *watchdogEngine) GetResolver() (r *resolver.Resolver, ok bool) {
+	return nil, false
+}