Fixes #17905: DBT Cloud time format mismatch

[aldwyn]

Rectify dbtcloud pipeline status created_at time format

Describe your changes:

Fixes 17905

I worked on ... because ...

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Type of change:

• [x] Bug fix
• [ ] Improvement
• [ ] New feature
• [ ] Breaking change (fix or feature that would cause existing functionality to not work as expected)
• [ ] Documentation

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Checklist:

• [x] I have read the CONTRIBUTING document.
• [x] My PR title is Fixes <issue-number>: <short explanation>
• [ ] I have commented on my code, particularly in hard-to-understand areas.
• [ ] For JSON Schema changes: I updated the migration scripts or explained why it is not needed.

[github-actions[bot]]

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