After changing /etc/crypttab and rebuilding initrd, I noticed (after booting)
that the system failed to boot as the /etc/inittab in initrd was obsolete:
# ll /etc/crypttab; lsinitrd |grep crypttab
-rw------- 1 root root 173 Apr 30 18:35 /etc/crypttab
-rw-------   1 root     root           37 Mar 13 17:02 etc/crypttab

Problem caused during boot:
2021-04-29T14:01:30.712242+02:00 localhost systemd[1]: Timed out waiting for
device
dev-disk-by\x2duuid-7135c231\x2d90f1\x2d4a16\x2daf63\x2d3d7190a1f1c0.device.
2021-04-29T14:01:30.712591+02:00 localhost systemd[1]: Dependency failed for
/dev/disk/by-uuid/7135c231-90f1-4a16-af63-3d7190a1f1c0.
2021-04-29T14:01:30.712973+02:00 localhost systemd[1]:
dev-disk-by\x2duuid-7135c231\x2d90f1\x2d4a16\x2daf63\x2d3d7190a1f1c0.swap: Job
dev-disk-by\x2duuid-7135c231\x2d90f1\x2d4a16\x2daf63\
x2d3d7190a1f1c0.swap/start failed with result 'dependency'.

The workaround was to mount the root, add "nofail" to /etc/fstab, them rebuild
initrd and reboot.