1.20.0

Upgrading select packages to 10.20.0:

AdamE.Firebase.iOS.Core
AdamE.Firebase.iOS.Installations
AdamE.Firebase.iOS.Storage
AdamE.Firebase.iOS.CloudMessaging
AdamE.Firebase.iOS.CloudFunctions
AdamE.Firebase.iOS.CloudFirestore
AdamE.Firebase.iOS.Auth
AdamE.Firebase.iOS.Analytics

-alpha versions have also been published (pending community validation) for:
AdamE.Firebase.iOS.ABTesting
AdamE.Firebase.iOS.Crashlytics
AdamE.Firebase.iOS.RemoteConfig
AdamE.Firebase.iOS.DynamicLinks

If you have been able to use these alpha packages without issue, please create a new Issue saying so and I'll publish future updates without the -alpha preview tag.