Just to clarify - this is also a RH-certified collection, and ansible-2.15 doesn’t EOL for I think another year or so at the product level.
I prepared a PR to implement this: [WIP] Remove cisco.ise from Ansible 12 by felixfontein · Pull Request #559 · ansible-community/ansible-build-data · GitHub
While working on that, I noticed that Ansible Community Package Collections Removal Process — Ansible Community Documentation does not link to Ansible Collection Policies - Ansible Package Release Management. If someone has time, feel free to create a PR to update that page accordingly 
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