In order to get python-certbot-dns-digitalocean in EPEL8 we need a python-digitalocean package.
pull request for bug 1828914 was merged so I should be able to fix this bug pretty soon.
FEDORA-EPEL-2020-b52113ee6a has been submitted as an update to Fedora EPEL 8. https://bodhi.fedoraproject.org/updates/FEDORA-EPEL-2020-b52113ee6a
FEDORA-EPEL-2020-b52113ee6a has been pushed to the Fedora EPEL 8 testing repository.
You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-EPEL-2020-b52113ee6a
See also https://fedoraproject.org/wiki/QA:Updates_Testing for more information on how to test updates.
FEDORA-EPEL-2020-b52113ee6a has been pushed to the Fedora EPEL 8 stable repository.
If problem still persists, please make note of it in this bug report.