As discussed on

flathub/org.virt_manager.virt-manager#2 (comment)

we would like to add some upstream virt-manager developers as additional co-maintainers to org.virt_manager.virt-manager

Please add @crobinso & @phrdina who are the upstream virt-manager release managers, as extra co-maintainers, and keep @travier as an existing maintainer.