Pin leak_tracker before publishing breaking change. (#135720)

packages/flutter_tools/lib/src/commands/update_packages.dart

@@ -36,6 +36,10 @@ const Map<String, String> kManuallyPinnedDependencies = <String, String>{
   'material_color_utilities': '0.5.0',
   // https://github.com/flutter/flutter/issues/115660
   'archive': '3.3.2',
+  // https://github.com/flutter/flutter/issues/135716
+  'leak_tracker': '9.0.7',
+  // https://github.com/flutter/flutter/issues/135716
+  'leak_tracker_flutter_testing': '1.0.5',
 };
 
 class UpdatePackagesCommand extends FlutterCommand {

packages/flutter_tools/test/general.shard/update_packages_test.dart

@@ -107,6 +107,8 @@ void main() {
         'video_player',
         'material_color_utilities',
         'archive',
+        'leak_tracker',
+        'leak_tracker_flutter_testing',
       ]),
     );
   });