Need more Github repositories

We need a more comprehensive list of GitHub repositories to look through. Right now the list of repositories I have was retrieved from [this script](https://github.com/github-vet/vet-bot/blob/main/cmd/go-repos-slow/main.go) which uses a ~clever trick~ dirty hack to attempt to grab all the repositories. Amusingly, it retrieved 223k of the roughly 700k public Golang repos on GitHub.

A better way is to use the date filter on GitHub's search API to visit all of the repositories by month and sort in order by creation date. If there are more than 1000 results in a given month, the search can be repeated by splitting the month in two.

Another option is to grab the GitHub repositories from https://pkg.go.dev, but that will require use of a different API.