feat(kube): upgrade of the hpa to make the helm chart work correctly with k126

[myles-vibrent]

What this PR does / why we need it:

This PR upgrades the HorizontalPodAutoscaler so that it will work with kubernetes 1.23+. apiVersion: autoscaling/v2beta2 => apiVersion: autoscaling/v2

Which issue this PR fixes

(optional, in fixes #<issue number>(, fixes #<issue_number>, ...) format, will close that issue when PR gets merged)

• fixes https://github.com/cetic/helm-swagger-ui/issues/26 @banzo

Special notes for your reviewer:

Checklist

[Place an '[x]' (no spaces) in all applicable fields. Please remove unrelated fields.]

• [ ] DCO signed
• [ ] Chart Version bumped
• [ ] Variables are documented in the README.md

[banzo]

See https://github.com/cetic/helm-swagger-ui/issues/28