Failing to boot after update (can't mount /efi)

Edit one of those entries. Change the options line to read like this:

options    nvme_load=YES rw root=UUID=564916d1-466c-468d-ad2e-163c047b1f9b

Delete /etc/kernel/cmdline if it exists.

Now reboot. Select the entry you modified from the boot menu.

If it works, run sudo reinstall-kernels to fix all your entries.