cidata: support upgrading nerdctl

[AkihiroSuda]

lima/pkg/cidata/cidata.TEMPLATE.d/boot/40-install-containerd.sh

Line 11 in 3ff1a15

if [ ! -x /usr/local/bin/nerdctl ]; then

Currently nerdctl is not upgraded even when nerdctl in cidata is newer than nerdctl in the root disk.