BSB definition is now moved from enterprise (l10n_au_aba) to l10n_au. BSB is not limited to ABA bank interactions. As such, it is useful to define this and allow validation in l10n, making it available to users who are not using ABA files. closes odoo/odoo#134321 Related: odoo/upgrade#5111 Related: odoo/enterprise#46914 Signed-off-by: William André (wan) <wan@odoo.com>