Add kubeval validation for k8s 1.25
Summary
Add a validate check for Kubernettes 1.25 . Similar to our existing ones https://gitlab.com/gitlab-org/charts/gitlab/-/blob/master/.gitlab-ci.yml#L172-177
Add a validate check for Kubernettes 1.25 . Similar to our existing ones https://gitlab.com/gitlab-org/charts/gitlab/-/blob/master/.gitlab-ci.yml#L172-177