Roll engine version to c4141ff8f467dc77b44a5357b61f68f2eb808a34

includes the following CLs since the last roll
- Further improve painting.dart documentation. (#4505)
- Add support for --strong option in the engine, create a strong mode
  version of platform file (#4504)
- Apply texture transform on Android (#4513)
- [fuchsia] Removed the flutter_app template. (#4511)
- This adds RPC call to set asset path. (#4323)
- Fix windows build by using lambda capture workaround (#4514)
- Add missing include for sk_malloc_throw

bin/internal/engine.version

-f6ea8f32aa502fe1cf5892b872a96820c02dd16e
+c4141ff8f467dc77b44a5357b61f68f2eb808a34