Bump version 12.0.1.7.7
CHANGELOG:
## [12.0.1.7.7] - 2021-12-20
### Added
- [#700](https://gitlab.com/coopdevs/odoo-somconnexio/-/merge_requests/700) Add `fiber signal type` field in fiber contracts
Related card: https://trello.com/c/izZ8ufQo/1096-release-120177
Edited by Pelayo García