Use the MobileActivationDateService service

CHANGELOG:

### Changed
- [#1036](https://git.coopdevs.org/coopdevs/som-connexio/odoo-somconnexio/-/merge_requests/1036 ) Change the dates activation and introduced to send to OTRS.

Related card: https://trello.com/c/jPv5FYbf/1643-revisar-dates-introducci%C3%B3-a-la-plataforma-i-data-activaci%C3%B3-que-enviem-a-otrs-en-el-seguiment-dels-enviaments

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⚠ Waiting to https://git.coopdevs.org/coopdevs/som-connexio/otrs-somconnexio/-/merge_requests/218 ⚠

🎉 OTRS-SomConnexió dependency already merged and released version 0.4.57 🎉