Update dependencies

vendor/tailscale.com/wgengine/magicsock/batching_conn.go

@@ -0,0 +1,25 @@
+// Copyright (c) Tailscale Inc & AUTHORS
+// SPDX-License-Identifier: BSD-3-Clause
+
+package magicsock
+
+import (
+	"net/netip"
+
+	"golang.org/x/net/ipv4"
+	"golang.org/x/net/ipv6"
+	"tailscale.com/types/nettype"
+)
+
+var (
+	// This acts as a compile-time check for our usage of ipv6.Message in
+	// batchingConn for both IPv6 and IPv4 operations.
+	_ ipv6.Message = ipv4.Message{}
+)
+
+// batchingConn is a nettype.PacketConn that provides batched i/o.
+type batchingConn interface {
+	nettype.PacketConn
+	ReadBatch(msgs []ipv6.Message, flags int) (n int, err error)
+	WriteBatchTo(buffs [][]byte, addr netip.AddrPort) error
+}