Update run-postman-tests.yaml

[vicradon]

​

Description

Update tests from self-hosted to ubuntu-latest

Screenshots (if appropriate - Postman, etc):

​

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) ​

  Checklist:

• [ ] My code follows the code style of this project.
• [ ] I have updated the documentation accordingly.
• [ ] I have added tests to cover my changes.
• [ ] All new and existing tests passed.