Update Flutter, packages, increment version

lib/main.dart

@@ -224,7 +224,7 @@ class _ObtainiumState extends State<Obtainium> {
       // set the background and surface colors to pure black in the amoled theme
       if (settingsProvider.useBlackTheme) {
         darkColorScheme = darkColorScheme
-            .copyWith(background: Colors.black, surface: Colors.black)
+            .copyWith(surface: Colors.black)
             .harmonized();
       }
 

lib/pages/app.dart

@@ -286,7 +286,7 @@ class _AppPageState extends State<AppPage> {
         ? WebViewWidget(
             controller: WebViewController()
               ..setJavaScriptMode(JavaScriptMode.unrestricted)
-              ..setBackgroundColor(Theme.of(context).colorScheme.background)
+              ..setBackgroundColor(Theme.of(context).colorScheme.surface)
               ..setJavaScriptMode(JavaScriptMode.unrestricted)
               ..setNavigationDelegate(
                 NavigationDelegate(

lib/pages/apps.dart

@@ -503,7 +503,7 @@ class AppsPageState extends State<AppsPage> {
       );
 
       var transparent =
-          Theme.of(context).colorScheme.background.withAlpha(0).value;
+          Theme.of(context).colorScheme.surface.withAlpha(0).value;
       List<double> stops = [
         ...listedApps[index].app.categories.asMap().entries.map(
             (e) => ((e.key / (listedApps[index].app.categories.length - 1)))),

lib/pages/home.dart

@@ -103,7 +103,7 @@ class _HomePageState extends State<HomePage> {
                   }) !=
               null) {
             // ignore: use_build_context_synchronously
-            var appsProvider = await context.read<AppsProvider>();
+            var appsProvider = context.read<AppsProvider>();
             var result = await appsProvider.import(action == 'app'
                 ? '{ "apps": [$dataStr] }'
                 : '{ "apps": $dataStr }');

lib/pages/import_export.dart

@@ -33,7 +33,7 @@ class _ImportExportPageState extends State<ImportExportPage> {
     var settingsProvider = context.watch<SettingsProvider>();
 
     var outlineButtonStyle = ButtonStyle(
-      shape: MaterialStateProperty.all(
+      shape: WidgetStateProperty.all(
         StadiumBorder(
           side: BorderSide(
             width: 1,