Update BayesWave settings for O4
Reminder that we need to update the BayesWave default settings to the O4 recommended settings following review sign-off on version v1.0.16. Note that this version is not yet deployed in igwn-testing
due to a segfault (see SCCB request).
According to BayesWave review chair Carl-Johan Haster, the O4 recommended settings are:
Nchain =8
Nthreads = 4
Niter = 100000
The BayesWave review presentation can be found in the DCC