chore: Bump Intl version to 0.20.2

Author: MichaelVerdon

packages/firebase_data_connect/firebase_data_connect/pubspec.yaml

@@ -19,7 +19,7 @@ dependencies:
     sdk: flutter
   grpc: ^3.2.4
   http: ^1.2.1
-  intl: ^0.19.0
+  intl: ^0.20.2
   protobuf: ^3.1.0
 
 dev_dependencies: