Appointment Gantt planning now groups bookings by all assigned resources, making it easier to manage appointment types that use multiple resources, such as restaurants with shared capacity. Resource capacity allocation has also been simplified so staff can handle complex bookings more reliably.

We now group the gantt view by appointment_resource_ids to manage
appointment type where multiple resources can be chosen for the
booking.

It is now possible to manage appointment types of restaurant type
(aka with manage capacity and multi resources).

The field appointment_resource_id on the calendar event is removed
as no longer useful. Everything is now managed with the
appointment_resource_ids field.

The capacity distribution between resources is simplified and takes
the shared resources in last.

task-3496901

The spreadsheet component was updated to a newer library version, with related tests adjusted to match the change. This helps keep spreadsheet features current and maintainable without introducing a major visible change for users.

…-alpha.8

Adapt test for odoo/o-spreadsheet@171a827c6

Ecuador's tax authority (SRI) updated income withholding tax rates for 2024. This update modifies the existing tax percentages and adds new tax configurations in Odoo to ensure compliance with the latest regulations. Businesses in Ecuador need these changes to accurately calculate and report employee income taxes.

In 2024 the SRI changes income withholding taxes. We update minor data and create new taxes for the new percentages

Forward-Port-Of: odoo/odoo#157226
Forward-Port-Of: odoo/odoo#156740