[FIX] various: fix digits_compute attribute changed to digits in new API

addons/hr_payroll/models/hr_payroll.py

addons/l10n_be_hr_payroll/models/l10n_be_hr_payroll.py

addons/l10n_fr_hr_payroll/models/l10n_fr_hr_payroll.py

addons/l10n_in_hr_payroll/models/l10n_in_hr_payroll.py

addons/marketing_campaign/models/marketing_campaign.py

addons/membership/models/membership.py

addons/membership/wizard/membership_invoice.py

addons/product/models/product.py

addons/product/models/product_attribute.py

addons/product/models/product_pricelist.py

addons/product/models/product_template.py

addons/stock_account/wizard/stock_change_standard_price.py

addons/stock_landed_costs/models/stock_landed_cost.py

addons/website_quote/models/sale_order.py

addons/website_quote/models/sale_quote.py