Do we want to feed github notifications to zulip and/or a mailing list?

It appears for the ML it is a mere matter of updating `.asf.yaml`:

```
notifications:
commits: commits@foo.apache.org
issues: issues@foo.apache.org
pullrequests: dev@foo.apache.org
```

I'm not sure how to configure Zulip but can't imagine it is that tricky.

Start by reviewing the proposed notifications block in .asf.yaml and the repository's existing notification configuration. Determine whether GitHub notifications should target the listed mailing lists, Zulip, or both, and identify the project's accepted configuration path. Done means the communication target and implementation approach are agreed and documented or configured.

Written by the indexing model from the issue text.