[FIX] hr_payroll_account: wrong date
[FIX] hr_payroll_account: wrong date

The date account is always the date of the day. This is not correct
according to the field description.

Fixes #12832
Closes #12833
opw-683969

ygol/odoo,hip-odoo/odoo,storm-computers/odoo,storm-computers/odoo,bplancher/odoo,ygol/odoo,hip-odoo/odoo,laslabs/odoo,dfang/odoo,storm-computers/odoo,Elico-Corp/odoo_OCB,Elico-Corp/odoo_OCB,storm-computers/odoo,microcom/odoo,hip-odoo/odoo,hip-odoo/odoo,ygol/odoo,microcom/odoo,bplancher/odoo,hip-odoo/odoo,bplancher/odoo,dfang/odoo,bplancher/odoo,bplancher/odoo,microcom/odoo,ygol/odoo,microcom/odoo,Elico-Corp/odoo_OCB,laslabs/odoo,ygol/odoo,dfang/odoo,ygol/odoo,storm-computers/odoo,laslabs/odoo,dfang/odoo,dfang/odoo,Elico-Corp/odoo_OCB,dfang/odoo,storm-computers/odoo,laslabs/odoo,laslabs/odoo,ygol/odoo,microcom/odoo,microcom/odoo,Elico-Corp/odoo_OCB,laslabs/odoo,Elico-Corp/odoo_OCB,hip-odoo/odoo,bplancher/odoo