[Feature] Use latest version of Font Awesome icons for all icons

[TimidRobot]

Problem

We use multiple version of the Font Awesome free icons. For example:

fa-angle-down is Font Awesome Free 5.11.0:
https://github.com/creativecommons/index-prototype/blob/ebf1921a70f2d22046cf0a76af3e03859e473f32/src/vocabulary/svg/font-awesome/icons/fa-icons.svg#L15-L18

fa-instagram is Font Awesome Free 6.3.0:
https://github.com/creativecommons/index-prototype/blob/ebf1921a70f2d22046cf0a76af3e03859e473f32/src/vocabulary/svg/font-awesome/icons/fa-icons.svg#L63-L66

Also, some of the icons don't include a copyright comment.

Description

• use Font Awesome Free 6.5.1 (or current version at time of implementation) for all FA icons (see comment-2023160268, below)
• add copyright info

Additional context

• https://fontawesome.com/icons
• [Research] find source of the fa-quote icon #8

[possumbilities]

@TimidRobot The copyright bit needs to probably be clearer. But the versions of the icons actually change the visual styling of the icons, and several of the icons used within the design are tied to those visual stylings so upgrading them would create a lot of changes we'd have to re-account for that starts to get into redesign land.

We also use very few of them. Upgrading the 6.3.0 to 6.5.1 might be worth it or possible if we want any additional icons, but again if it changes the actual shape or implementation of the icon then we can't; The changes there are also likely to be mostly in the css and js bits which we don't use.

I'll look into it further because there might be room for improvement here, but there's likely going to always be a need to keep the versions mixed.

[lalitkumawat1m]

Hey Team! Can I work on this issue?

[Vanessa082]

If you're looking for the most sustainable solution, I recommend upgrading all icons to the latest version and adding custom CSS to handle any slight discrepancies in appearance. This will help ensure that the project is up-to-date and easier to maintain in the future while minimizing the visual impact.