networkmanager: fix updateScript
networkmanager: fix updateScript

> Major NetworkManager releases are numbered 1.y.0, with y being an
> even number. For example, 1.0.0, 1.2.0, ..., 1.18.0. Minor stable
> releases are numbered 1.y.z, with y and z being even numbers. For
> example 1.4.2, 1.18.2.

NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs