System update, now computer randomly restarts

I just performed a system update using pacman -Syu on the stable branch. It seems everything updated fine, but now my computer restarts randomly. Other discussions I have seen on this issue point to faulty hardware, but since it did not happen before the update it points to something about the update being the issue. I am using Gnome v43.3. Does anyone have any ideas about how I can investigate this?

rerun update again:

sudo pacman-mirrors --fasttrack 5 && sudo pacman -Syyu

post full system info:
inxi -zav7

and try with different kernels…
if it happens also with them provide logs after the restart happens:
journalctl -b-1 -p4 --no-pager

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