GHSA-5jvp-m9h4-253h: Fleet: Authorization Bypass in certificate template batch deletion for team administrators

Fleet, a device management system, had a broken authorization check (a failure to properly verify permissions) in its certificate template deletion feature that allowed a team administrator to delete certificate templates belonging to other teams. This could disrupt certificate-based services like device enrollment and Wi-Fi authentication for other teams, though it didn't allow attackers to access sensitive data or take control of Fleet's main systems.