skip roll_dev_integration_test (#70653)

dev/tools/test/roll_dev_integration_test.dart

@@ -128,5 +128,7 @@ void main() {
     });
   }, onPlatform: <String, dynamic>{
     'windows': const Skip('Flutter Conductor only supported on macos/linux'),
-  });
+  // TODO(fujino): re-enable once
+  // https://github.com/flutter/flutter/issues/70652 is resolved
+  }, skip: true);
 }