Add another handled case, flexible logic for more than one attachment to minutes matter

[hancush]

Description

This PR adds another handled case to multiple attachments to minutes matters, and, if there is more than one attachment moving forward, tries to grab the one with "minutes" in its title.

Per Metro, the naming convention isn't guaranteed to be specific, but looking for "minutes" is a good starting point https://github.com/datamade/la-metro-councilmatic/issues/742#issuecomment-1048278789.

Testing instructions

Already done

• Run a full event scrape and confirm it succeeds.