fh init has incorrect Nixpkgs version

[cdenihan]

When running fh init, users are prompted to select a Nixpkgs version. The "latest stable" option currently displays 24.11 as the current release, even though 25.11 is the actual latest stable version:

> Which Nixpkgs version would you like to include?
> latest stable (currently 24.11)
  24.11
  unstable
  select a specific release (not recommended in most cases)

Despite this outdated label, the generated flake correctly resolves to the latest stable release via a wildcard URL:

nixpkgs.url = "https://flakehub.com/f/NixOS/nixpkgs/*";