Pass execution_time as UTC

[polivbr]

Pull Request

Description

Type of Change

• 🐛 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)
• 📚 Documentation update
• 🧹 Code refactoring (no functional changes)
• ⚡ Performance improvement
• 🧪 Test improvements
• 🔧 CI/CD changes

Related Issues

Fixes #17
Closes #17

Changes Made

Pass UTC timezone to datetime.now() call used to generate execution_time.

Testing

Test Coverage

• Unit tests added/updated
• Integration tests added/updated
• All existing tests pass
• Manual testing performed

Test Commands

# Commands used to test the changes
make test
make lint
make vulture

Checklist

Code Quality

• Code follows the project's style guidelines
• Self-review of the code completed
• Code is properly commented (especially complex logic)
• No dead code or unused imports
• All functions have appropriate docstrings

Testing

• Tests have been added for new functionality
• All tests pass locally
• Test coverage maintained or improved
• Manual testing completed

Documentation

• Documentation updated (if applicable)
• GitHub Release notes will be updated (for notable changes)
• ADR created/updated (for architectural decisions)
• Examples updated (if public API changed)

Dependencies

• No new dependencies added (or justified in description)
• pyproject.toml updated (if dependencies changed)
• uv.lock updated

Breaking Changes

None / Describe breaking changes here

Performance Impact

No impact / Describe performance changes

Screenshots

Additional Notes

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For Reviewers

Review Areas

• Code quality and style
• Test coverage and quality
• Documentation completeness
• Performance implications
• Breaking change assessment
• Security considerations

Testing Instructions

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