Change API version in Kyverno policy examples

[Teejay128]

Updated API version in Kyverno policies from v1alpha1 to v1.

Related issue

Fixes #2005

This PR updates multiple code samples in the Kyverno Quick Start guide that were using the deprecated policies.kyverno.io/v1alpha1 API Version.

Running these samples threw deprecation warning messages as shown below:

Proposed Changes

Updated code samples with the old alpha version

apiVersion: policies.kyverno.io/v1alpha1

to use the modern stable v1 version

apiVersion: policies.kyverno.io/v1

This change clears out the error as seen below:

and updates the samples to match the stable versions as seen in the Policy Types page.

Checklist

• I have read the contributing guidelines.
• I have inspected the website preview for accuracy.
• I have signed off my issue.

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