adds double splat operator to find_in_batches
adds double splat operator to find_in_batches

This will remove the following deprecation warning for ruby 2.7.1:
```
counter_culture-2.6.0/lib/counter_culture/reconciler.rb:112: warning: Using the last argument as keyword parameters is deprecated; maybe ** should be added to the call
```

magnusvk/counter_culture,magnusvk/counter_culture