Drive API is deprecated by Google and will stop working in December

Last year Google deprecated the Drive API we use.

Unlike some deprecations, which scold you when you run "Inspect Code" but continue to work, Google is shutting this down on their side.

Timeline from the Google Developers website:

* December 6, 2018: Deprecation is publicly announced. Existing clients will be able to access the API normally, but should immediately commence with migration efforts. New clients must not use the API.
* October 21, 2019: The Drive Android API is removed from the Google Play Services SDK distribution. Apps will be unable to build until removing the Drive Android API dependency, but existing builds will be unaffected. The Drive Android API public documentation will no longer be available.
* December 6, 2019: The Drive Android API is shut down and all connection attempts will be refused. Clients must migrate by this date.

There are ways to adjust the app to continue using Drive, but we must change it or we won't be able to use it at all in a few months.