This update enhances the Spanish tax reporting functionality within Odoo Enterprise by incorporating data from 'page 2 bis' into the 390 boe report. This addition ensures more complete and accurate tax reporting for Spanish businesses, aligning with local regulations. The change supports a key requirement for compliance with Spanish tax requirements.

In this commit:
- We are adding representation of page 2 bis to the 390 boe.txt 

task-5881396

Forward-Port-Of: odoo/enterprise#106861