Sadly, I just do not have enough time to work with other versions right now. I have major upgrades in progress to four out of the five plugins I maintain and I think I might run out of time before the release of the upcoming Moodle 4.4. I just need something that can run Behat tests, while I try to figure out why my actual Behat server quit working. I'm trying to NOT have to re-flash the MSDC chip so I don't have to preserve all the data on it, first.