CDP Oakland: Missing Matter Items and Voting

### Describe the Bug

While working on CDP data, I noticed a big difference between Legistar data and the data displayed on the CDP's website. For example, 28 votes were held during the 10/04/2022 Oakland City Council meeting [according to the official Legistar](https://oakland.legistar.com/MeetingDetail.aspx?ID=996194&GUID=AEB0185C-E969-4E32-818E-623DDAF88A12&Options=info|&Search=). However, only two of these votes are [displayed on the CDP's instance](https://councildataproject.org/oakland/#/events/9ff334b53362). I suspect that there was either a problem with the scraper's code or a technical glitch on the Oakland City Council's official Legistar while the data was being scraped.

### Expected Behavior

_What did you expect to happen instead?_

### Reproduction

_Steps to reproduce the behavior and/or a minimal example that exhibits the behavior._

### Environment

_Any additional information about your environment._

- OS Version: _[e.g. macOS 11.3.1]_
- CDP Backend Version: _[e.g. 0.5.0]_