Switch to working leiningen plugin

[lordmauve]

Is your feature request related to a problem? Please describe

The leiningen plugin in asdf-vm/asdf-plugins does not seem to work. It does list versions but does not install them.

Describe the proposed solution

Switch to https://codeberg.org/malice/asdf-lein.git which is a fork of the current plugin.

That plugin works for me. Recent commits address various issues: https://codeberg.org/malice/asdf-lein/commits/branch/master

Describe similar asdf features and why they are not sufficient

As above, the current plugin does not work.

Describe other workarounds you've considered

I can add this plugin manually but doing so does not work with the GitHub Action.