Included font 'sc-icons' has Glyph bbox error on Firefox

[Arkerthan]

Describe the bug.
The included font (sc-icons) from Font Awesome has broken bounding boxes.

This is fixed as of Font Awesome 6.5: FortAwesome/Font-Awesome#19925

The included version is 5.15.2

To Reproduce:

1. Use Firefox as browser
2. Load any page with the font included, for example https://www.motoslave.net/sugarcube/2/docs
3. Open dev console (Ctrl + Shift + K)
4. See warning.

Expected behavior.
No warning

Project details.

• SugarCube Version: 2.37

Desktop details.

• Browser & Version: Firefox 130

Additional context.
Currently, this is not a breaking problem, so I'd be happy if it's fixed if/when there's a change to the font anyways.