Bump version 12.0.1.2.0

CHANGELOG:

## [12.0.1.2.0] - 2021-04-26
### Added
- [#453](https://gitlab.com/coopdevs/odoo-somconnexio/-/merge_requests/453) Migrate translations of external modules
- [#443](https://gitlab.com/coopdevs/odoo-somconnexio/-/merge_requests/443) Raise error with CRMAccountHierarchy fallback strategy
- [#442](https://gitlab.com/coopdevs/odoo-somconnexio/-/merge_requests/442) Add contract terminate reasons
- [#412](https://gitlab.com/coopdevs/odoo-somconnexio/-/merge_requests/412) Improve validations of SR and CRMLead in validation process:
  - SR: Don't allow validating if the IBAN bank is archived or doesn't exist in Odoo.
  - CRMLead:
    - Add REMESA stage
    - Raise error if Partner is not set.
    - Raise error if the IBAN bank is archived or doesn't exist in Odoo.
    - Raise error if exists a CRMLead or Contract with the same phone number.
    - Add wizard to change stage to Remesa allowing to skip the duplicated phone validation.

- [#394](https://gitlab.com/coopdevs/odoo-somconnexio/-/merge_requests/394) Create activities after wizard execution

### Fixed
- [#472](https://gitlab.com/coopdevs/odoo-somconnexio/-/merge_requests/472) Improve the CI:
  - Verify the Codecov Bash upload script integrity.
  - Add job to check if coverage decrease from a minimun configured.

### Changed
- [#465](https://gitlab.com/coopdevs/odoo-somconnexio/-/merge_requests/465) Add delivery address in mobile service contract info model, and use it the new sim sending letter instead of the partner's invoice one.
- [#450](https://gitlab.com/coopdevs/odoo-somconnexio/-/merge_requests/450) Activity date_done now editable and changes traceable

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