While doing my monthly debian 12 updates (apt-get update && apt-get upgrade), this popped up: debsuryorg-archive-keyring (2025.03.11) unstable; urgency=medium * The /etc/apt/trusted.gpg.d/debsuryorg-archive.gpg global APT key will been removed in the next update of the package. The script will try to autodetect whether any APT repository is not configured with signed-by= directive and will print warning about the installation of this package. You need to manually add: [signed-by=/usr/share/keyrings/debsuryorg-archive-keyring.gpg] to your APT sources lists. See the Debian Wiki for more information: https://wiki.debian.org/DebianRepository/UseThirdParty#Sources.list_entry I've read the wiki page but I still don't understand what I'm supposed to do. Has anyone come across this?
Those messages and wiki instruct you to update the configuration file of APT-system so new requirements are met. I suppose all additional repositories are going to need that same configuration change, once the new requirement is enforced. What particular part do you want help with? If it is too complicated, it might be easier to just follow instructions Sury has on deb packages website, the README.txt file tells how to add the repository on your Debian host. It is in https://packages.sury.org/php/
