l10n_br_nfse: Update python lib erpbrasil.assinatura version 1.4.0
l10n_br_nfse: Update python lib erpbrasil.assinatura version 1.4.0

akretion/l10n-brazil,akretion/l10n-brazil,OCA/l10n-brazil,OCA/l10n-brazil,OCA/l10n-brazil,akretion/l10n-brazil