fheroes2: switch to gitUpdater to avoid non-version tags
fheroes2: switch to gitUpdater to avoid non-version tags

`gitUpdater` uses common updater that uses only versioned tags as input.
It also supports version ignore ranges if needed.

Without the change updater tries to pul in `fheroes-android` non-release:
  https://github.com/NixOS/nixpkgs/pull/198000

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