WT1.1.11 Null-Safe migration

lib/animations/test_progress_animation.dart

@@ -2,10 +2,9 @@ import 'package:flutter/cupertino.dart';
 import 'package:flutter/material.dart';
 
 class TestProgress extends AnimatedWidget {
-
   TestProgress({
-    Key key,
-    @required Animation<double> animation,
+    Key? key,
+    required Animation<double> animation,
   }) : super(key: key, listenable: animation);
 
   @override
@@ -15,14 +14,14 @@ class TestProgress extends AnimatedWidget {
     return Transform.scale(
       alignment: Alignment.center,
       scale: animation.value,
-      origin: Offset(-5,0),
+      origin: Offset(-5, 0),
       child: Container(
-        alignment: Alignment.center,
-        padding: EdgeInsets.only(left: 0),
-        child: Icon(Icons.star, color: Colors.yellow,)
-      ),
+          alignment: Alignment.center,
+          padding: EdgeInsets.only(left: 0),
+          child: Icon(
+            Icons.star,
+            color: Colors.yellow,
+          )),
     );
   }
-
-
-}
+}