Make download artifacts on kairos.io read the artifacts in the release

[mauromorales]

We currently hardcode the name of the flavor release on the downloads, this is problematic when we upgrade them, we should just read the contents of the release and quay repo

https://github.com/kairos-io/kairos-docs/blob/6982e666f1df869dc9ebefd8d1118a2ecc788d51/layouts/partials/content.html#L15