valandil [1] filed an orphan request for heroku-cli [2]:

This package has been marked out of date for a while. I've also
emailed the maintainer, and have not received any responses for four
days. I would like to take over maintenance of the package.

[1] https://aur.archlinux.org/account/valandil/
[2] https://aur.archlinux.org/pkgbase/heroku-cli/