There is a seemingly official repository for CentOS in Vagrant Cloud [1], but it contains outdated images (including one for Stream 8). It would help me a lot if this repo was actually maintained by someone and provided the latest Vagrant boxes for CentOS Stream (8 and 9), since it would allow me to simply put e.g.

config.vm.box = "centos/stream9"

into a Vagrantfile and get a VM with the latest CS9.

[1] https://app.vagrantup.com/centos