please add support for commonmarker 2.x (especially 2.6.1), else it prevents ruby 4.0 support because commonmarker 0.23 depends on Ruby >= 2.6, < 4.0. https://github.com/jekyll/jekyll-commonmark/blob/bcac00e555097a1ca737d9d6f837d9a4feaa1ef4/jekyll-commonmark.gemspec#L19