Migration to version 13.0

# Todo

https://github.com/OCA/maintainer-tools/wiki/Migration-to-version-13.0

# Modules to migrate

- [ ] purchase_multic_fix
- [ ] account_multicompany_ux
- [ ] sale_stock_multic_fix
- [ ] account_multic_fix
- [ ] purchase_stock_multic_fix
- [ ] sale_multic_fix