Release Version 2.4.2 "Orabou"

Git ref: 731d6a97

Checklist

Basics

1. The CI pipeline succeeded, including all unit tests and code quality checks.
2. CHANGES.rst lists all significant changes since the last release. It is free from spelling and grammatical errors.
3. The latest Readthedocs documentation build passed and the latest branch docs are correctly rendered. Autodoc-generated API docs for tasks are shown.
4. If there is milestone for this release, then the list of issues and merge requests that have been addressed is accurate. Any unaddressed issues and merge requests have been moved to another milestone.
5. Check the versions of the following packages in the poetry.lock file have been approved by the SCCB (i.e. either has the status:deploy or status:deployed label).
   • bilby
   • <code data-sourcepos="16:13-16:22">bilby_pipe</code> (reviewer signoff exists, no deploy status)
   • gracedb-sdk
   • gwdatafind
   • gwpy
   • <code data-sourcepos="20:13-20:20">gwskynet</code> validation status; review approved; waiting for deploy label
   • igwn-alert
   • igwn-gwalert-schema
   • lalsuite
   • ligo-followup-advocate
   • ligo-gracedb
   • ligo-raven
   • ligo-segments
   • ligo.em-bright
   • ligo.skymap
   • <code data-sourcepos="30:13-30:24">lscsoft-glue</code> project is conda packaged, instead of deploy
   • pesummary
   • python-ligo-lw
   • rapidpe
   • rapidpe-rift-pipe
   • RIFT

Acceptance tests skipped in favor of those done in #826 (closed)