Docs: Adds k8s supported verions (#1731)

Signed-off-by: Daneyon Hansen <daneyon.hansen@solo.io>

Author: danehans

site-src/_includes/prereqs.md

@@ -1,5 +1,6 @@
 A cluster with:
 
+- Support for one of the three most recent Kubernetes minor [releases](https://kubernetes.io/releases/).
 - Support for services of type `LoadBalancer`. For kind clusters, follow [this guide](https://kind.sigs.k8s.io/docs/user/loadbalancer)
   to get services of type LoadBalancer working.
 - Support for [sidecar containers](https://kubernetes.io/docs/concepts/workloads/pods/sidecar-containers/) (enabled by default since Kubernetes v1.29)