Bump version 12.0.2.6.0

CHANGELOG:

## [12.0.2.6.0] - 2024-06-05
### Added
- [#1205](https://git.coopdevs.org/coopdevs/som-connexio/odoo-somconnexio/-/merge_requests/1205) Add EiE products

### Changed
- [#1218](https://git.coopdevs.org/coopdevs/som-connexio/odoo-somconnexio/-/merge_requests/1218) Add new discovery channels

Related card: https://trello.com/c/OhjqvoUL/1900-release-odoo-120260

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