Updating hardening manifest maintenainers - removing jamie/lorenze, adding alex/hayden/jeremy

What is your Merge about?

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

Updating container maintainers and removing CHT tag

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.