Samples maintenance (#435)

provider_shopper/analysis_options.yaml

@@ -1,4 +1,4 @@
-include: package:pedantic/analysis_options.1.8.0.yaml
+include: package:pedantic/analysis_options.1.9.0.yaml
 
 analyzer:
   strong-mode:

provider_shopper/pubspec.lock

@@ -122,7 +122,7 @@ packages:
       name: provider
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "4.0.4"
+    version: "4.1.0"
   quiver:
     dependency: transitive
     description:
@@ -199,5 +199,5 @@ packages:
     source: hosted
     version: "3.6.1"
 sdks:
-  dart: ">=2.6.0 <3.0.0"
-  flutter: ">=1.12.1"
+  dart: ">=2.7.0 <3.0.0"
+  flutter: ">=1.17.0"

provider_shopper/pubspec.yaml

@@ -16,7 +16,7 @@ dependencies:
 dev_dependencies:
   flutter_test:
     sdk: flutter
-  pedantic: ^1.8.0
+  pedantic: ^1.9.0
 
 flutter:
   uses-material-design: true

provider_shopper/test/cart_widget_test.dart

@@ -47,7 +47,7 @@ void main() {
       await tester.pumpWidget(createCartScreen());
 
       // Adding five items in the cart and testing.
-      for (int i = 0; i < 5; i++) {
+      for (var i = 0; i < 5; i++) {
         var item = catalogModel.getByPosition(i);
         cartModel.add(item);
         await tester.pumpAndSettle();

provider_shopper/test/catalog_widget_test.dart

@@ -35,7 +35,7 @@ void main() {
 
       // Testing for the items on the screen after modifying
       // the model for a fixed number of items.
-      for (String item in catalogListItems) {
+      for (var item in catalogListItems) {
         expect(find.text(item), findsWidgets);
       }
     });