Deps update, utilize super.key (#1265)

* Deps update, utilize `super.key`

* `flutter format`

form_app/lib/main.dart

@@ -65,7 +65,7 @@ final demos = [
 ];
 
 class FormApp extends StatelessWidget {
-  const FormApp({Key? key}) : super(key: key);
+  const FormApp({super.key});
 
   @override
   Widget build(BuildContext context) {
@@ -79,7 +79,7 @@ class FormApp extends StatelessWidget {
 }
 
 class HomePage extends StatelessWidget {
-  const HomePage({Key? key}) : super(key: key);
+  const HomePage({super.key});
   @override
   Widget build(BuildContext context) {
     return Scaffold(
@@ -96,7 +96,7 @@ class HomePage extends StatelessWidget {
 class DemoTile extends StatelessWidget {
   final Demo? demo;
 
-  const DemoTile({this.demo, Key? key}) : super(key: key);
+  const DemoTile({this.demo, super.key});
 
   @override
   Widget build(BuildContext context) {

form_app/lib/src/autofill.dart

@@ -7,7 +7,7 @@ import 'package:flutter/material.dart';
 // Demonstrates how to use autofill hints. The full list of hints is here:
 // https://github.com/flutter/engine/blob/master/lib/web_ui/lib/src/engine/text_editing/autofill_hint.dart
 class AutofillDemo extends StatefulWidget {
-  const AutofillDemo({Key? key}) : super(key: key);
+  const AutofillDemo({super.key});
 
   @override
   State<AutofillDemo> createState() => _AutofillDemoState();

form_app/lib/src/form_widgets.dart

@@ -6,7 +6,7 @@ import 'package:flutter/material.dart';
 import 'package:intl/intl.dart' as intl;
 
 class FormWidgetsDemo extends StatefulWidget {
-  const FormWidgetsDemo({Key? key}) : super(key: key);
+  const FormWidgetsDemo({super.key});
 
   @override
   State<FormWidgetsDemo> createState() => _FormWidgetsDemoState();

form_app/lib/src/sign_in_http.dart

@@ -31,8 +31,8 @@ class SignInHttpDemo extends StatefulWidget {
 
   const SignInHttpDemo({
     this.httpClient,
-    Key? key,
-  }) : super(key: key);
+    super.key,
+  });
 
   @override
   State<SignInHttpDemo> createState() => _SignInHttpDemoState();

form_app/lib/src/validation.dart

@@ -6,7 +6,7 @@ import 'package:english_words/english_words.dart' as english_words;
 import 'package:flutter/material.dart';
 
 class FormValidationDemo extends StatefulWidget {
-  const FormValidationDemo({Key? key}) : super(key: key);
+  const FormValidationDemo({super.key});
 
   @override
   State<FormValidationDemo> createState() => _FormValidationDemoState();