Notarization script prints an empty operation id

See https://ci-release.nodejs.org/job/iojs+release/9715/nodes=osx11-release-pkg/console

```
09:03:15 Notarization process is done with Notarytool.
09:05:02 Notarization submitted. Operation ID: 
09:05:02 ssh node-www "mkdir -p nodejs/nightly/v21.0.0-nightly20231019c016397276"
```

/cc @UlisesGascon 