Register new events in events.yml
Register new events in events.yml

In #246 we saw the addition of:
- Surfnet\Stepup\Identity\Event\IdentityAccreditedAsRaForInstitutionEvent
- Surfnet\Stepup\Identity\Event\IdentityAccreditedAsRaaForInstitutionEvent

These events needed to be registered in the events.yml to be able to use
them in the middleware. To build aggregates and perform event replays.

See: https://github.com/OpenConext/Stepup-Middleware/pull/246

SURFnet/Stepup-Middleware,SURFnet/Stepup-Middleware,OpenConext/Stepup-Middleware,OpenConext/Stepup-Middleware