Support `.tool-versions` files with multiple versions

[jtannas]

ASDF supports having multiple different versions for each dependency.

ruby 3.1.6 3.2.4 3.3.3

From their docs:

Source: https://asdf-vm.com/manage/configuration.html#tool-versions

This is very useful for gems that have to support multiple different versions of ruby.

Unfortunately setup-ruby crashes out when encountering this.

Please add support for this feature of ASDF.

[eregon]

So I guess we should just pick the first version in such a case?
Please make a PR if you are interested in this.

[jtannas]

So I guess we should just pick the first version in such a case?

Yep - ideally it'd mimic ASDF's resolution order of "try first, try second, etc..." but that's probably asking too much.

Please make a PR if you are interested in this.

Can do 👍