flutter_geocoder has been deprecated, need to update as per latest flutter version

Getting below error in console panel:

```
The plugins `flutter_geocoder` use a deprecated version of the Android embedding.
To avoid unexpected runtime failures, or future build failures, try to see if these plugins support the Android V2 embedding. Otherwise, consider removing them since a future release of Flutter will remove these deprecated APIs.
```

Need to update `flutter_geocoder` plugin as per latest flutter version. Thanks.