Execute an available update against a network server that is a registered component of the
specified system, identified by the update definition id in the path.

The update runs asynchronously: this endpoint returns 202 Accepted with a pending
update operation, and the update then transitions through pending → running → completed/failed
via a background job. There is currently no endpoint in this set to poll the update operation
status.

The network server must be a component of the system (else 404), and the update definition must
be applicable to the network server's type (else 400). There is no request body.

Requires the infrastructure-system permission with full access.