parallel_bilby incompatibility with new GWpy version (unpinned version dependency)

When installing parallel_bilby (version 1.1.0) in a clean conda environment, the version of GWpy (3.0.0) installed as a dependency is not compatible, resulting in the error,

TypeError: read() got an unexpected keyword argument 'dtype'

when running parallel_bilby_generation on a configuration file.

The quick solution was to downgrade GWpy to version 2.1.5.