update target sdk. update firebase messaging

[sleushunou]

Description

Update targetSdk to Android12 Update Xamarin.Firebase.Messaging to 123.1.1.1

It's fix for "Indirect notification activity start (trampoline) from com.paws.haloapp blocked" when tap on push notification on android12 (activity can not be launched).

Issues Resolved

Platforms Affected

• Android

PR Checklist

• [x] I have read the CONTRIBUTING document
• [x] My code follows the code styles
• [x] Targets the correct branch
• [x] Tests are passing (or failures are unrelated)