Backend `notifications` API is not compatible with Saturn connector.

[matbmoser]

Current Behavior

Currently the notifications send mechanism is not compatible with saturn.
The problem is that the SDK Notifications module does not supports notifications in Saturn format yet:

https://github.com/eclipse-tractusx/tractusx-sdk/blob/05bb3765eff75d7e15ee484e7838bacf78b4865d/src/tractusx_sdk/extensions/notification_api/services/notification_consumer_service.py#L148-L154

We get a 503 ERROR

Expected Behavior

Support saturn notification exchange.

Steps To Reproduce