Revive automated testing

[etam]

Description

• Revive automated testing. Both with github actions and with docker-compose-test.yml.
• Run as much tests on MariaDB as possible (there are still some tests skipped for MariaDB with "TODO" messages)

Type of Change

• Bug fix
• New feature
• Documentation update
• Other (please specify below)

Maintenance

Checklist

• I have read and understood the CONTRIBUTING.md document.
• I have checked there aren't any other open Pull Requests for the desired changes.
• This PR resolves an issue #[Issue Number Here].

Tests

• All tests have passed.
• New tests have been added to cover the changes. (describe below if applicable).

Additional Information

• mariadb client inside python:3.11-alpine docker image was failing to connect to servers with errors about self-signed certificates. So I just changed it to python:3.11.
• I have no idea what mysql-5-ctl was for, so I just removed it.

[julien-duponchelle]

Thanks !!! Just the day I need it !