Include InterVariable.ttf and InterVariable-Italic.ttf
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# Description:
<!-- Describe the bug in full detail. -->
Currently, the package doesn't include the mentioned fonts in the title. These fonts are a core part of the font family, and will probably be used in a near future by Gnome [by default](https://gitlab.gnome.org/Teams/Design/initiatives/-/issues/152).
# Additional info:
* package version(s): 4.0-1
* config and/or log files: N/A
* link to upstream bug report, if any: N/A
# Steps to reproduce:
<!-- Describe how to reproduce the bug step by step including the commands -->
1. Install the package `inter-font`
2. `pacman -Ql inter-font |grep ".ttf"`
3. The mentioned fonts aren't there.
issue