FCM "token" deprecations

[DarioAhdoot]

Is your feature request related to a problem? Please describe.
Firebase Android SDK recently deprecated FCM token APIs. Apps are now required to use the Firebase Installation ID (FID) as a replacement. The Customer.io SDK only supports the old/deprecated tokens.

Describe the solution you'd like
Add support for the new FID.

[mrehan27]

Hi @DarioAhdoot, thanks for raising this. We're aware of this change and have noted it down. We'll prioritize it accordingly and will keep this issue updated with any progress we make.

Thanks again, and have a great day!