CHEF-1918 Fixed the knife-vrealize verify test failure

[nikhil2611]

Description

updated ruby version to 3.1 and removed 2.7 and 3.0 ruby verify pipeline as the latest chef 18.2.7 supports ruby >= 3.1

Types of changes

• [ ] 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 change)
• [ ] Chore (non-breaking change that does not add functionality or fix an issue)

Checklist:

• [ ] I have read the CONTRIBUTING document.
• [ ] I have run the pre-merge tests locally and they pass.
• [ ] I have updated the documentation accordingly.
• [ ] I have added tests to cover my changes.
• [ ] All new and existing tests passed.
• [ ] All commits have been signed-off for the Developer Certificate of Origin.

[sonarcloud[bot]]

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