openttd: 1.10.1 -> 1.10.2
openttd: 1.10.1 -> 1.10.2

A bug in the upstream configure script was fixed (OpenTTD/OpenTTD#8145),
which means we now need `which` available during the build.

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