fix: Replace deprecated Pydantic .dict() with .model_dump() in example files

- Fixed examples/python/api/secondary-market-research-api.py:443
- Fixed examples/python/concepts/reasoning-extraction.py:34
- Fixed ZeroScript_AI_TestExecutor.ipynb notebook
- Added test script to verify fixes work correctly
- Maintains backward compatibility with Pydantic v2
- Resolves PydanticDeprecatedSince20 warnings

Resolves #934

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Co-authored-by: Mervin Praison <MervinPraison@users.noreply.github.com>

Author: github-actions[bot]