Create Kubernetes support versioning strategy

[akashsinghal]

What would you like to be added?

Ratify supports testing the 2 versions of K8s. These versions are determined adhoc and do not necessarily match the 2 latest versions. Furthermore, the CRD image is built with 1.25 k8s and hasn't been updated with newer version. We should have a plan to:

1. K8s versions we will support in our build pr test matrix
2. k8s versions we will test for build our CRDs
3. K8s version we will use for building CRD image on publish (do we publish multiple CRD image versions?)

Anything else you would like to add?

No response

Are you willing to submit PRs to contribute to this feature?

• [ ] Yes, I am willing to implement it.