Bump version 12.0.2.1.6
CHANGELOG:
## [12.0.2.1.6] - 2023-02-27
### Fixed
- [#1000](https://git.coopdevs.org/coopdevs/som-connexio/odoo-somconnexio/-/merge_requests/1000) Send subdivision code to OTRS without the country code.
- [#994](https://git.coopdevs.org/coopdevs/som-connexio/odoo-somconnexio/-/merge_requests/994) Fix contract holder change available products: filter by old product category
### Changed
- [#997](https://git.coopdevs.org/coopdevs/som-connexio/odoo-somconnexio/-/merge_requests/997) When changing a contract's holder, the new contract should start one day after the end date from the old one.
Related card: https://trello.com/c/Eeu2xpKz/1580-template-release-120216
Edited by Gerard Funosas