Update dependency to latest Xamarin.Firebase.Messaging

[rohitvipin]

🚀 Update dependency to latest Xamarin.Firebase.Messaging

A lot of dependencies have changed and removed in the latest version of Xamarin.Firebase.Messaging. FirebasePushNotificationPlugin seems to have a lot more dependencies than it needs to work.

Support for the latest Xamarin.Firebase.Messaging 122.0.0

Plugin.FirebasePushNotification depends on Xamarin.Firebase.Messaging (>= 71.1740.0)

Platforms affected (mark all that apply)

• [x] :iphone: iOS
• [x] :robot: Android
• [ ] :checkered_flag: WPF
• [ ] :earth_americas: UWP
• [ ] :apple: MacOS
• [ ] :tv: tvOS
• [x] :monkey: Xamarin.Forms