Fixes #18150 : change replaced dict by model_dump

[kuma0128]

Describe your changes:

Fixes #18150

The dict method is deprecated; use model_dump instead. Deprecated in Pydantic V2.0 to be removed in V3.0

Type of change:

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

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.