Do not break pack contract with fiber tariff change
CHANGELOG:
### Fix
- [#993](https://git.coopdevs.org/coopdevs/som-connexio/odoo-somconnexio/-/merge_requests/993) Do not break pack contract with fiber tariff change
Related card: https://trello.com/c/Ce89azrE/1563-error-en-canvi-de-tarifa-ba-dins-pack
Edited by Gerard Funosas