Update to latest release of the githubapi module.

[serundeputy]

Once backdrop-contrib/githubapi#22 lands we'll need to update the githubapi module on b.org to stop using the deprecated auth via query parameters.

[serundeputy]

Merged: backdrop-contrib/githubapi#21 (comment)
release forthcoming.

Looks like we're still awaiting a new release of that module... Pinging @quicksketch.