Migration to version 12.0

[OCA-git-bot]

Todo

https://github.com/OCA/maintainer-tools/wiki/Migration-to-version-12.0

Modules to migrate

• [x] github_connector - By @cristinamartinrod - #33
• [x] github_connector_oca - By @cubells - #39
• [x] github_connector_odoo - By @cubells - #38

[emagdalenaC2i]

Please, check github_connector_oca - By @cubells - #39 that is already merged

Please, check github_connector_odoo - By @cubells - #38 that is already merged