Automatically execute data minimisation on accepted/rejected registrations after 1 month

One-sentence description

Automatically execute data minimalisation on accepted/rejected registrations after 1 month

Desired behaviour

• Once registrations are accepted and paid the data in the registration object should be minimalised to just the created membership. This will minimalise the places where user data is stored.
• Once registrations are rejected the data should be removed from our system.
• This should not deleted accepted and non-paid registrations. So those that are waiting for payment.