[fix] fix attrs ib(convert=x) to ib(converter=x)

src/sakia/data/entities/blockchain.py

src/sakia/data/entities/certification.py

src/sakia/data/entities/connection.py

src/sakia/data/entities/contact.py

src/sakia/data/entities/dividend.py

src/sakia/data/entities/identity.py

src/sakia/data/entities/node.py

src/sakia/data/entities/source.py

src/sakia/data/entities/transaction.py

src/sakia/data/entities/user_parameters.py