[CircleCI Security Alert] Rotate any secrets stored in CircleCI

@DrTorte thank you for the quick reply. My ticket number is 124712. You can also see additional information (and more people affected) here: Cannot reconnect BitBucket account

If we can just get the error on https://app.circleci.com/projects/project-dashboard/github/{my-project}/ cleared, I’ll be happy. We took this opportunity to ditch Bitbucket, but CircleCI still errors out.