Merge from Dev (0.3.0)

[Lore09]

This pull request updates the Kentra platform Helm chart and related configuration files to support the new 0.3.0 release. The main changes involve bumping version numbers for the chart and its dependencies, updating container image tags, and revising example configuration to use more generic values for easier customization.

Version updates:

• Updated the Helm chart version and application version to 0.3.0 in Chart.yaml to reflect the new release.
• Bumped dependency versions for kentra (to 0.3.2) and kentra-dashboard (to 0.3.0) in Chart.yaml.
• Updated Docker image tags for kentra (controller) to 0.3.1 and kentra-dashboard to 0.3.0 in values.yaml. [1] [2]

Documentation and configuration improvements:

• Revised example values in README.md to use placeholder domain names and secret names (yourdomain.com, your-cluster-issuer, kentra-tls-secret) for easier customization.
• Updated installation instructions in README.md to use the new chart version 0.3.0.