Reinstate libpython3.X.so to support embedded python in liblalsimulation

In order to support calling Python waveform generates from the LALSimulation C code, liblalsimulation needs to link against libpython3.X.so. However, that library is not in the pypa/manylinux images that are used to build the Linux wheels for LALSuite.

Are we able to 'reinstate' libpython3.X.so to support linking?