Upgrade chart to latest version for v2.8

[cvlc]

Description

Please include:

• a summary of the change and which issue is fixed
• relevant motivation and context
• any dependencies that are required for this change

Fixes # (issue)
N/A

This upgrades the umbrella Helm chart version used to the latest. In effect, this promotes the blueprints to the latest version of Ondat - v2.8.

Type of change

Please check options that are relevant.

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• This change requires a documentation update

How Has This Been Tested?

Please describe:

• the tests that you ran to verify your changes
• the instructions so we can reproduce
• the list any relevant details for your test configuration

Test Configuration:

• Kubernetes distribution
• Kubernetes version:
• How many control plane node:
• KMS:
• KMS version:

Checklist:

• My code follows the style guidelines of this project
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes
• Any dependent changes have been merged and published in downstream modules