v1.2.5

• Version 1.2.5: Python 3.12+ & Google Colab compatibility, pydantic v2, pandas 3.0

• Migrate pydantic v1 → v2 API (model_validate, model_dump, field_validator, model_validator)
• Add pandas 3.0 compatibility: remove inplace=True, replace .replace({np.nan:}) with .fillna()
• Relax dependency constraints for shared environments (pandas <4.0.0, numpy <3.0.0, openpyxl <4.0.0)
• Remove unused dependencies (six, cleo) and relax exact pins (requests, xlrd)
• Update CI workflows to Python 3.11
• Update examples/environment.yml for Python 3.9-3.12
• Update methodology documentation references