Please  upgrade `path_provider` to `^2.0.1`

Please  upgrade `path_provider` to `^2.0.1`

```dart
mp_chart 0.3.1 depends on path_provider ^1.1.0 
and no versions of mp_chart match >0.3.1 <0.4.0, 
mp_chart ^0.3.1 requires path_provider ^1.1.0.`
```

```dart
mp_chart ^0.3.1 and path_provider ^2.0.1, version solving failed
```
