This is in response to the following email from GitHub:
Hello there!
On March 17th, 2020 at 08:23 (PDT), your application (lil-blog-generator) issued a request using the deprecated form of OAuth Application API that includes access tokens in the URL path. GitHub has deprecated these endpoints and replaced them with a version that accepts access tokens in the request body.
The deprecated endpoints will be removed on May 5th, 2021 at 4:00 PM UTC.
This is in response to the following email from GitHub:
I believe the change here is the only such API call in the application; the docs for the new endpoint are at https://developer.github.com/v3/apps/oauth_applications/#delete-an-app-token