go.mod: update for 1.86.0

Signed-off-by: Aaron Klotz <aaron@tailscale.com>

Author: dblohm7

go.mod

@@ -5,7 +5,7 @@ go 1.24.4
 require (
 	github.com/tailscale/wireguard-go v0.0.0-20250716170648-1d0488a3d7da
 	golang.org/x/mobile v0.0.0-20240806205939-81131f6468ab
-	tailscale.com v1.85.0-pre.0.20250722205428-729d6532ff35
+	tailscale.com v1.86.0
 )
 
 require (

go.sum

@@ -237,3 +237,5 @@ software.sslmate.com/src/go-pkcs12 v0.4.0 h1:H2g08FrTvSFKUj+D309j1DPfk5APnIdAQAB
 software.sslmate.com/src/go-pkcs12 v0.4.0/go.mod h1:Qiz0EyvDRJjjxGyUQa2cCNZn/wMyzrRJ/qcDXOQazLI=
 tailscale.com v1.85.0-pre.0.20250722205428-729d6532ff35 h1:RaZ9EcaONTkfAerz5hbjpFbtok9uqB46I34Q9T7VGQg=
 tailscale.com v1.85.0-pre.0.20250722205428-729d6532ff35/go.mod h1:Lm8dnzU2i/Emw15r6sl3FRNp/liSQ/nYw6ZSQvIdZ1M=
+tailscale.com v1.86.0 h1:lB2nkeoW+F3CFaEADxOASVGL5+w3i2CmeW277tN+jlk=
+tailscale.com v1.86.0/go.mod h1:Lm8dnzU2i/Emw15r6sl3FRNp/liSQ/nYw6ZSQvIdZ1M=