update ubi8 base from 8.7 to 8.8

What is your Merge about?

If this is your first merge, please use the Initialization Template.

update UBI 8 base to 8.8

For more information please visit Iron Bank Documentation

Note: Please be sure you create an issue related to this merge request and the issue is labeled ~"Hardening::Review", this will initiate a CHT member review of your merge request.