go.mod: update for 1.18.0

go.mod

@@ -10,7 +10,7 @@ require (
 	golang.org/x/sys v0.0.0-20211110154304-99a53858aa08
 	golang.zx2c4.com/wireguard v0.0.0-20211116201604-de7c702ace45
 	inet.af/netaddr v0.0.0-20211027220019-c74959edd3b6
-	tailscale.com v1.1.1-0.20211116231549-773af7292b95
+	tailscale.com v1.18.0
 )
 
 require (

go.sum

@@ -653,3 +653,5 @@ tailscale.com v1.1.1-0.20211109021509-d6dde5a1aca7 h1:gfDJ/zqR+hPeL3JCOY6akU2VHv
 tailscale.com v1.1.1-0.20211109021509-d6dde5a1aca7/go.mod h1:+3SVDKPct8EqzwfYDQ3RpRwwBodKP7kNs49WXoM7wiw=
 tailscale.com v1.1.1-0.20211116231549-773af7292b95 h1:gyWNQkqxuUbdumPC5XH5rGRQG1iomkTblYVC8A7L7Jw=
 tailscale.com v1.1.1-0.20211116231549-773af7292b95/go.mod h1:XzG4o2vtYFkVvmJWPaTGSaOzqlKSRx2WU+aJbrxaVE0=
+tailscale.com v1.18.0 h1:riytbiTTxaglL9an6VrD03xWvPOPN8vD3VOFOvdB3Io=
+tailscale.com v1.18.0/go.mod h1:XzG4o2vtYFkVvmJWPaTGSaOzqlKSRx2WU+aJbrxaVE0=