Upgrade to latest Font Awesome

[pirxthepilot]

Upgrade to latest version 6.7.1 of Font Awesome. This version includes new SVG icons such as Bluesky.

Note that some SVGs got renamed since the last version so I had to change these values in Osprey Delight v5.0.7 icons.yml to get the theme to work:

# General
warning:
  id: fas triangle-exclamation
  title: Warning

# Modal
close: 
  id: fas x
  title: Close

# Contact
sending: fas shuttle-space
ok: fas circle-check