Errata import into Katello for CentOS 7

I do understand there are multiple external scripts to import Errata detail into Katello 3.1x which have been referred to here in the forum. However, many of them I tried don’t work since the switch to Pulp3. What would be the currently recommended way to handle errata import for the CentOS 7 repo?

Expected outcome:
Import errata for CentOS 7 from sites like

Foreman and Proxy versions:
Foreman 2.2.1
Katello 3.17

Foreman and Proxy plugin versions:

Distribution and version:
CentOS 7.9

Other relevant data:

One example I tried: