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?