Incus 7.5.1 fixes 11 security issues and adds OVN child networks

Incus 7.5.1 fixes 11 security issues, including critical flaws that could allow host file writes or deletions and project restriction bypasses.

The release adds OVN child networks, allowing internal subnets to share a parent network's logical router, uplink and peerings.

It also enables live moves of running instances between cluster members and projects, while adding security tags, OIDC claims for authorization scriptlets, cluster metrics and NetBSD agent support.