scrape hackernews every 20min, save json to hn.json and commit.
Read more about it here cri.dev/posts/2020-11-06-Tracking-HackerNews-history-in-git/
using christian-fei/hn to scrape data
based on the idea of https://simonwillison.net/2020/Oct/9/git-scraping/ and https://github.com/simonw/ca-fires-history