Can't Upgrade to Buster

[Mark Allums <mark@allums.email>]

I've been running Buster in Testing happily for months.  So technically, 
I'm already upgraded.  However,

> root@martha:~# apt-get update
> Get:1 http://deb.debian.org/debian buster InRelease [118 kB]
> Get:2 http://security.debian.org/debian-security buster/updates InRelease [31.1 kB]
> Get:3 http://security.debian.org buster/updates InRelease [31.1 kB]            
> Get:4 http://deb.debian.org/debian buster-updates InRelease [46.8 kB]          
> Hit:5 http://packages.microsoft.com/repos/vscode stable InRelease              
> Hit:6 https://repo.skype.com/deb stable InRelease                              
> Hit:7 https://packages.microsoft.com/debian/9/prod stretch InRelease           
> Hit:8 http://deb.debian.org/debian sid InRelease                    
> Hit:9 http://deb.debian.org/debian experimental InRelease
> Ign:10 http://repo.vivaldi.com/stable/deb stable InRelease
> Hit:11 http://repo.vivaldi.com/stable/deb stable Release
> Ign:12 http://download.opensuse.org/repositories/home:/stevenpusser/Debian_9.0  InRelease
> Hit:14 http://download.opensuse.org/repositories/home:/stevenpusser/Debian_9.0  Release
> Reading package lists... Done
> N: Repository 'http://deb.debian.org/debian buster InRelease' changed its 'Version' value from '' to '10.0'
> E: Repository 'http://deb.debian.org/debian buster InRelease' changed its 'Suite' value from 'testing' to 'stable'
> N: This must be accepted explicitly before updates for this repository can be applied. See apt-secure(8) manpage for details.
> E: Repository 'http://security.debian.org/debian-security buster/updates InRelease' changed its 'Suite' value from 'testing' to 'stable'
> N: This must be accepted explicitly before updates for this repository can be applied. See apt-secure(8) manpage for details.
> E: Repository 'http://security.debian.org buster/updates InRelease' changed its 'Suite' value from 'testing' to 'stable'
> N: This must be accepted explicitly before updates for this repository can be applied. See apt-secure(8) manpage for details.
> E: Repository 'http://deb.debian.org/debian buster-updates InRelease' changed its 'Suite' value from 'testing-updates' to 'stable-updates'
> N: This must be accepted explicitly before updates for this repository can be applied. See apt-secure(8) manpage for details.

root@martha:~# apt-secure
-bash: apt-secure: command not found


What do I do?

Mark