Just goto Trixie.
Debian operating system
Debian is a free operating system (OS) for your computer. An operating system is the set of basic programs and utilities that make your computer run. Debian provides more than a pure OS: it comes with over 59000 packages, precompiled software bundled up in a nice format for easy installation on your machine.
Yes, this is possible if you configure preferences (see man apt_preferences
). However if you install numerous packages from testing, this can lead to various bugs. I used to do such installation and concluded that it is better to avoid this.
What kind of bugs where that?
https://wiki.debian.org/DontBreakDebian
With that said you could also check if the packages you require are available in the backports repository. It doesn't look like Restic or Podman have packages available but its possible they will during Trixie's lifetime.
That was many years ago, so I don't remember all of them. E.g. Chromium was unable to display pages (was it installed from testing? or it was from stable but some of its dependencies from testing? I forgot).
For some apps that are not system relevant such as restic I have found a solution in form of distrobox. But that does not work for programs like podman.
The trixie freeze has started. I would simply move there.
What would I need to do to switch?
Can you post the contents of your /etc/apt/sources.list file? Presumably it's as simple as changing all the bookworm references to trixie.