Replace the apt step with nala if installed.

[RayJW]

I want to suggest a new step

Which tool is this about? Where is its repository?

It's about "nala" an apt frontend replacement with optimized terminal output and added features like automatically choosing the best mirror or parallelized downloads for faster updates.

Which operating systems are supported by this tool?

Any Linux distro that uses apt.

What should Topgrade do to figure out if the tool needs to be invoked?

I think checking for the nala command in the PATH should be sufficient.

Which exact commands should Topgrade run?

Running sudo nala upgrade does the job.