Update Package Versions Known By asdf Plugin

When you run asdf list-all ruby, asdf will list all the package versions it knows about for that plugin. This list is based on when the plugin was most recently installed or updated. If it has been a while, there are likely new versions that asdf doesn't know about.

This list can be updated with the plugin-update command:

$ asdf update-plugin ruby
$ asdf plugin-update ruby

Now, the next time you run asdf list-all ruby, you'll have an up-to-date listing of available package versions.