Upgrade FontAwesome version from 5 to 6

[RaczeQ]

With the emergence of the BlueSky social media app, users might want to show their user handle in the portfolio.

I was able to manually modify the scss file in assets with the newest font awesome version (website ships with version 5), where the bluesky logo is included:

---
---
/* Add your custom style here */
@import "portfolYOU";

@import url("https://use.fontawesome.com/releases/v6.7.1/css/all.css");