Update or remove a dependant of an existing user

Update a single dependant of an existing user on the Benifex platform. The response contains the ID of the updated dependant. This endpoint allows the dependants of an existing user to be updated using their OneHub user ID and dependant ID. The PATCH endpoint also supports the removal of an existing dependant from a user. Instead of deleting the record, we mark the dependant as inactive by updating the flags: - "isCurrent": false - "isVisible": false This ensures the dependant is retained in the system for audit/history purposes but no longer considered active for benefits.