running: sudo dpkg-divert --rename --remove /usr/share/initramfs-tools/plymouth-hook.diverted
should solve the issue, but you should make sure to remove /usr/share/initramfs-tools/plymouth and run sudo update-initramfs -u after apt is done to make sure your system still boots.
running: initramfs- tools/plymouth- hook.diverted
sudo dpkg-divert --rename --remove /usr/share/
should solve the issue, but you should make sure to remove /usr/share/ initramfs- tools/plymouth and run sudo update-initramfs -u after apt is done to make sure your system still boots.