Fix authentication issue

[montyanderson]

On February 7th, 2020 at 14:39 (UTC) your application (GitBackup) used its `client_id` and `client_secret` (with the User-Agent axios/0.19.0) as part of a set of query parameters to access an endpoint through the GitHub API:

https://api.github.com/user/4220991/repos

Please use Basic Authentication instead as using OAuth credentials in query parameters has been deprecated.

Depending on your API usage, we'll be sending you this email reminder at most once every 3 days.
Just one URL that was accessed with a User-Agent combination will be listed in the email reminder, not all.

Visit https://developer.github.com/changes/2019-11-05-deprecated-passwords-and-authorizations-api/#authenticating-using-query-parameters for more information.

Thanks,
The GitHub Team```