Latest maturin version 1.7.8 was released and comes with metadata version 2.4

Our requirements-pipeline fails on main because of this latest metadata version.

The latest twine version 6.0.1 should fix the issue as per https://redhat-internal.slack.com/archives/C079FE5H94J/p1733414360040699

We are currently in the process of refining our onboarder job and thus upon completion, will use latest twine version. 

While, we do so, we will constrain maturin to 1.7.5 which we are already building. 

This is a temporary fix and the constraint should be removed after we start using new onboarder.