Our google_sign_in plugin is using an old "GSI v2" API that is being deprecated.

The new API library is the "Google Identity Services" API:

• Web - https://developers.google.com/identity/gsi/web
• Android - https://developers.google.com/identity/one-tap/android

(on iOS, it appears the existing library may still be the recommended API)