Update dependencies

vendor/tailscale.com/wgengine/netstack/netstack_tcpbuf_default.go

@@ -0,0 +1,20 @@
+// Copyright (c) Tailscale Inc & AUTHORS
+// SPDX-License-Identifier: BSD-3-Clause
+
+//go:build !ios
+
+package netstack
+
+import (
+	"gvisor.dev/gvisor/pkg/tcpip/transport/tcp"
+)
+
+const (
+	tcpRXBufMinSize = tcp.MinBufferSize
+	tcpRXBufDefSize = tcp.DefaultSendBufferSize
+	tcpRXBufMaxSize = 8 << 20 // 8MiB
+
+	tcpTXBufMinSize = tcp.MinBufferSize
+	tcpTXBufDefSize = tcp.DefaultReceiveBufferSize
+	tcpTXBufMaxSize = 6 << 20 // 6MiB
+)