Redmine

FYI: CommonMarker 1.0 requires Ruby 3.1.0 or higher. If this change is included in Redmine 6.0.0, Redmine 6.0.0 will drop support for Ruby 3.0 as well as 2.7.

Go MAEDA wrote in #note-1:

FYI: CommonMarker 1.0 requires Ruby 3.1.0 or higher. If this change is included in Redmine 6.0.0, Redmine 6.0.0 will drop support for Ruby 3.0 as well as 2.7.

Due to the migration to Rails 7.2 in #36320#note-42, Redmine now requires Ruby 3.1 and higher.
It is no longer necessary to consider the supported Ruby versions to update the CommonMarker gem.