fix: pydantic version specification

[GustavBaumgart]

Description

The pydantic version must be <2.0 in order for the validation requirements to be met with current examples.

Type of Change

• Bug Fix
• New Feature
• Breaking Change
• Refactor
• Documentation
• Other (please describe)

Checklist

• I have read the contributing guidelines
• Existing issues have been referenced (where applicable)
• I have verified this change is not present in other open pull requests
• Functionality is documented
• All code style checks pass
• New code contribution is covered by automated tests
• All new and existing tests pass

[codecov-commenter]

Codecov Report

Merging #439 (8cab5fa) into main (77a0e09) will not change coverage.
The diff coverage is n/a.

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  Lines        2830     2830           
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  Misses       2380     2380           
  Partials       29       29