go.mod: update wireguard-go to pick up roaming toggle

wgengine/wgcfg: introduce wgcfg.NewDevice helper to disable roaming
at all call sites (one real plus several tests).

Fixes tailscale/corp#3016.

Signed-off-by: David Anderson <danderson@tailscale.com>
Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>

wgengine/wgcfg/device.go

@@ -8,11 +8,20 @@ import (
 	"io"
 	"sort"
 
+	"golang.zx2c4.com/wireguard/conn"
 	"golang.zx2c4.com/wireguard/device"
+	"golang.zx2c4.com/wireguard/tun"
 	"tailscale.com/types/logger"
 	"tailscale.com/util/multierr"
 )
 
+// NewDevice returns a wireguard-go Device configured for Tailscale use.
+func NewDevice(tunDev tun.Device, bind conn.Bind, logger *device.Logger) *device.Device {
+	ret := device.NewDevice(tunDev, bind, logger)
+	ret.DisableSomeRoamingForBrokenMobileSemantics()
+	return ret
+}
+
 func DeviceConfig(d *device.Device) (*Config, error) {
 	r, w := io.Pipe()
 	errc := make(chan error, 1)