Is your feature request related to a problem? Please describe.

I suggest using Font Awesome 6 in @joomla 4.

Describe the solution you'd like

Replace Font Awesome 5.15.2 with Font Awesome 6

Additional context

Currently Font Awesome 6 is used in @WordPress.

I believe this is the right step for the development of Joomla, as developers will be targeting a specific version of the font in the future. Stable version Font Awesome 6 will be released this year, so Font Awesome 6 will develop along with Joomla 4 and Bootstrap 5. I think this is the right step.

V6: https://fontawesome.com/6
V6 updates: https://fontawesome.com/updates
Version: 6.0.0-alpha2: https://fontawesome.com/download