Update the default design sensitivity PSD

This MR just adds the new O4 PSD here: https://dcc.ligo.org/LIGO-T2000012/public as the default "design sensitivity" PSD for the H1 and L1 interferometers. This resolves #451 (closed)

bilby/gw/detector/detectors/H1.interferometer

 # Advanced LIGO Hanford at design sensitvity.
 # LIGO-T980044-10
-# https://dcc.ligo.org/LIGO-P1200087-v42/public
+# https://dcc.ligo.org/LIGO-T2000012/public
 name = 'H1'
 power_spectral_density = PowerSpectralDensity(psd_file='aLIGO_O4_high_psd.txt')
 minimum_frequency = 20