Support latest PostgreSql and MySql images from https://github.com/sclorg

[fabiobrz]

This is a follow-up for #161 - which is instead quickly fixed by #162 and the goal is to track the effort for supporting the latest released images.
This is also important for tests involving Keycloak, for instance, because it might need a PostgreSql database service as well (actually one integration test using such configuration).

• Environment: N/A
• Steps to reproduce: N/A

[dosubot]

Hi, @fabiobrz. I'm Dosu, and I'm helping the intersmash team manage their backlog. I'm marking this issue as stale.

Issue Summary:

• The issue aims to support the latest PostgreSQL and MySQL images from the sclorg repository.
• This support is crucial for integration tests involving Keycloak, which may require a PostgreSQL database service.
• There have been no comments or additional activity on this issue since it was opened.

Next Steps:

• Please let me know if this issue is still relevant to the latest version of the intersmash repository by commenting here.
• If there is no further activity, the issue will be automatically closed in 30 days.

Thank you for your understanding and contribution!