We are aware of an issue some customers are having installing Enhance due to the dependency on linux-image-extra-virtual.
https://askubuntu.com/questions/1563603/issues-updating-kernel-to-6-8-0-100-24-04
Ubuntu/Canonical should be releasing a fix soon - in the meantime we will publish a workaround.
If you are seeing this problem, try:
apt install linux-image-extra-virtual=6.8.0-94.96 linux-image-generic=6.8.0-94.96
Then re-run the Enhance installation.
Thanks Adam, had this problem this morning before I seen this but can confirm what you posted worked for us earlier today.