Enable `markup.goldmark.renderer.unsafe` Hugo option

During the migration of /org/workinggroups from the PHP site, I've realized that as soon as a page has more complex markup, such as tables, we tend to skip the HTML to Markdown migration and just create a shortcode with the entire content of the page using HTML.

Wouldn't it be better to enable the markup.goldmark.renderer.unsafe option in the config.toml?

This would allow the interpolation of HTML within Markdown files, so that we could use HTML tables in the content files and therefore have tightly related things less spread out.

could I have your opinion on this @oliviergoulet @cguindon @malowe @epoirier