fixes https://github.com/spesmilo/electrum/pull/9726/files#r2057787097 :
> The version of readlink installed on macOS does not support the -e flag:
> ```
> 💬 INFO: preparing electrum-locale.
> readlink: illegal option -- e
> usage: readlink [-fn] [file ...]
> ```
>
> On a mac you can install a version of readlink that argbash expects:
> Using homebrew, `brew install coreutils` will install `greadlink` which supports the `-e` flag.
I don't think we actually need to resolve symlinks here.
There are already some examples of similar usage with realpath vs grealpath. Let's just do that.
3a5815d854