update pdb for appmesh controller

[brandocomando]

Issue

Description of changes

Update PDB to be compatible with k8s 1.27+

Checklist

• Added/modified documentation as required (such as the README.md for modified charts)
• Incremented the chart version in Chart.yaml for the modified chart(s)
• Manually tested. Describe what testing was done in the testing section below
• Make sure the title of the PR is a good description that can go into the release notes

Testing

Deploy helm chart on k8s cluster 1.27+ where pdb poilcy/v1beta1 has been deprecated.

By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license.

[ysdongAmazon]

https://github.com/aws/aws-app-mesh-controller-for-k8s/pull/470/files

An inconsistency with our controller repo, thanks for finding out. Should be good to merge. @BennettJames

[BennettJames]

Hey Brandon,

Thanks for the PR. The files you are modifying here are coming from a different location - they originate in https://github.com/aws/aws-app-mesh-controller-for-k8s/blob/master/config/helm/appmesh-controller/templates/pdb.yaml#L4, and will need to be modified there for this change to stick.

[brandocomando]

Thanks for pointing that out. Opened a PR over there: aws/aws-app-mesh-controller-for-k8s#723