Define and Set supported k8s versions

[alex-bezek]

Description

We need to test and document which versions of k8s and the ingress spec we officially support

Use Case

some features may not work on older k8s versions and we'll need to actively manage which past versions we support

Related issues

No response

[alex-bezek]

Discussed this, we should try to follow the standard k8s pattern of the 3 most recent versions. ingress beta was deprecated prior to the last 3 k8s versions so it is not supported.

[alex-bezek]

This is a good example of showing historic support for various versions https://github.com/kubernetes/ingress-nginx?tab=readme-ov-file#changelog

[alex-bezek]

@salilsub mentioned that as a part of this, we should also document the supported versions of the controller. IE: We may not support a version of the controller that's a year old. For this though, we may need to consider how our versions are still pre 1.0