Carrier Billing APIs - Aligment with Commonalities and ICM MetaRelease Spring 25 Guidelines

[PedroDiez]

Problem description
Aligment with Commonalities and ICM is needed. To do so Check the Commonalities and ICM scope issues and related release PRs to ensure alignment with their upcoming versions
Parent Issue: #194

Possible evolution
Based on upcoming merged PRs identify the related impacts in Carrier Billing APIs and align the design accordingly

Alternative solution
N/A

Additional context
It is needed to have some PRs merged in order to begin this work

[PedroDiez]

NOTE: Alpha Release for Commonalities will be expected soon , so as we have the first set of PRs to evaluate

[PedroDiez]

@rartych provided some input https://lf-camaraproject.atlassian.net/wiki/x/jIAQAw , in order to help API impacts identification

[PedroDiez]

Next priority action. Generate PR with commonalities aligment:

• Errors
• OAS callback (cloudevent model)