See: https://gitlab.gnome.org/GNOME/gimp/-/issues/9653#note_1780587
Looking at MSYS2 logs, it looks like they very recently "fixed" the search paths
for lua files, which in turn broke our workaround (searching in subdirectories
of bin/ instead of share/ and lib/).
This should work better (though untested) with the workaround removed now.
Commit on luajit package at MSYS2:
703c7bae2f
8e4850dafe