Update the topic of Matrix instead of IRC

The community has moved from IRC to Matrix and this needs to be
reflected in the procedure.

README.md

@@ -22,7 +22,7 @@ Below is a listing of access used.
 
 * Belong to the [Foreman GitHub release-managers team](https://github.com/orgs/theforeman/teams/release-managers)
 * Belong to the `releases` group on [Discourse](https://community.theforeman.org/)
-* IRC: permission to change the topic in [#theforeman on Libera.Chat](ircs://irc.libera.chat/theforeman). See [Libera.Chat permissions](https://libera.chat/guides/creatingchannels#setting-up-permissions) on how channel owners can grant this.
+* Matrix: permission to change the topic in [#theforeman on matrix.org](https://matrix.to/#/#theforeman:matrix.org). See [Matrix moderation](https://matrix.org/docs/communities/moderation/) on how channel admins can grant this.
 * Redmine access: be added to the [Developers group](https://projects.theforeman.org/groups/44213/edit?tab=users)
 * Transifex account (unclear on the exact permissions to extract translations)
 

procedures/foreman/release.md.erb

@@ -159,7 +159,7 @@ Note: If for some reason there was an issue with the tarballs that required uplo
 - [ ] Create a feedback post on [Discourse](https://community.theforeman.org/) (like https://community.theforeman.org/t/foreman-3-8-release-candidate-feedback/35196)
 <% end -%>
 - [ ] Announce the release on [Discourse](https://community.theforeman.org/c/release-announcements/8) using <%= rel_eng_script('release_announcement') %>
-- [ ] Update the topic in #theforeman channel on Libera.Chat
+- [ ] Update the topic in [#theforeman channel on Matrix](https://matrix.to/#/#theforeman:matrix.org)
 - [ ] Share the release announcement on Twitter
 <% if is_first_ga -%>
 - [ ] Update `stable` version in [foreman-infra](https://github.com/theforeman/foreman-infra/blob/master/puppet/modules/profiles/manifests/web.pp#L24)