Fix body= param data body
CHANGELOG:
### CHANGED
- [#692](https://gitlab.com/coopdevs/odoo-somconnexio/-/merge_requests/692) Accept json as body param in application/x-www-form-urlencoded
Related card: https://trello.com/c/zkhCkzLl/1016-error-en-body-json-hook
Edited by Pelayo García