Ah, nice. 
Suspend is broken on my laptop again. This is like the third time an update did this (while staying on the LTS kernel 5.15.x series).
Something’s going on with upstream kernel development. I’ve experience three or four issues while on 5.15.x that break suspends and/or reboots.
What makes me resistant to troubleshoot this (again) is that the previous times all my troubleshooting efforts were in vain, since it was a matter of waiting for the regression to be fixed by the upstream kernel developers.