If you're running Google Lighthouse manually, you might want to check out a tool I'm building - https://OnlineOrNot.com - it automatically monitors your page speed (as well as uptime, and soon Puppeteer checks). It uses Google Lighthouse v8.0.0 as of this morning (Australian time).
We have a free tier with no time limit or credit card required, if you want to check it out.
We have a free tier with no time limit or credit card required, if you want to check it out.