Your font manager.
Fonts used to be an install-and-forget thing, but many of are now updated regularly. fontman helps you keep track of the fonts you installed and updates them from GitHub.
Install with
pip install fontman
and use as
fontman install microsoft/cascadia-code rsms/inter ibm/plex==v5.1.3
Other commands are remove
and update
fontman up
which updates all your installed fonts.