Update default LIGO PSD

The default noise curve used is out of date and should be updated to use https://dcc.ligo.org/LIGO-T1800044/public.

This will cause quite a lot of changes to existing analyses. It will still be possible to use the current PSD, we can just leave that in the repository.

I think the only changes that are needed are in the interferometer files.

• https://git.ligo.org/lscsoft/bilby/blob/master/bilby/gw/detector/detectors/H1.interferometer
• https://git.ligo.org/lscsoft/bilby/blob/master/bilby/gw/detector/detectors/L1.interferometer