Enable Karapace schema registry authorization

Most Aiven for Apache Kafka® services will automatically have schema registry authorization enabled, and the functionality cannot be disabled or enabled once a service has been created.

However, some older services may pre-date this feature. To enable or disable this functionality on older services:

To enable schema registry authorization for a service, replace the SERVICE_NAME placeholder with the name of the Aiven for Apache Kafka® service in the Aiven CLI:
```
avn service update --enable-schema-registry-authorization SERVICE_NAME
```
You can similarly disable the Karapace schema registry authorization using:
```
avn service update --disable-schema-registry-authorization SERVICE_NAME
```

warning

Enabling Karapace schema registry authorization can disrupt access for users if the access control rules have not been configured to allow this. For more information, see Manage Karapace schema registry authorization.