tracker-extract: Handle application/vnd.efi.iso for ISO images
This is the new mimetype used by shared-mime-info for ISO images in recent versions: https://gitlab.freedesktop.org/xdg/shared-mime-info/-/merge_requests/220
This is the new mimetype used by shared-mime-info for ISO images in recent versions: https://gitlab.freedesktop.org/xdg/shared-mime-info/-/merge_requests/220