Upon using this script, I got an automated email from Github:

Hi @redyoshi49q,

On August 1st, 2020 at 07:09 (UTC) you used a password to access an endpoint through the GitHub API using curl/7.58.0:

https://api.github.com/gists

Basic authentication using a password to the API is deprecated and will soon no longer work. Visit https://developer.github.com/changes/2020-02-14-deprecating-password-auth/ for more information around suggested workarounds and removal dates.

Thanks,
The GitHub Team

The linked page suggests that the password authentication measure used by this script will break in mid-November (though token authentication will presumably still work fine).