spglib: fix libs property for some multilib distros (#22956)
spglib: fix libs property for some multilib distros (#22956)

on multilib distros with lib/lib64 (rather than lib32/lib) the library ends up in a dir lib64/ instead of lib/, breaking the libs property (and the cp2k+spglib build)
LLNL/spack,LLNL/spack,LLNL/spack,LLNL/spack,LLNL/spack