icon: fix ouput "raw HTML omitted" with goldmark config unsafe=false

[postb99]

Hi,

I updated my copy of theme to latest main and we noticed that at least since June 1 the icon shortcode is stripped. Can you explain what's wrong?

My article's code:

+++
title = "Photographie"
weight = 2
+++
[Photos et vidéos entre ciel et terre {{% icon icon="fa-brands fa-facebook" %}}](https://www.facebook.com/groups/216710605160181)

I tried variants such as putting icon shortcode after link, or even using html code such as

Thanks for a clue

[McShelby]

Luckily this isn't contained in an official release yet but only available in the main branch.

I am not sure if this can be fixed easily or if I revert the causing changes in #547.

For a quick fix on your side, you could add this to your config/hugo.toml:

[markup]
  [markup.goldmark.renderer]
    unsafe = true

[McShelby]

I've reverted most of the changes