update license & changelog

CHANGELOG.md

 # CHANGELOG
+v8.0.2 (2023-08-03)
+---
+- Complete code refactor to **PHP 8.1**
+- Update symfony/serializer to **^6.0**
+- Added `RankFeaturQuery` and updated `GeoShapeQuery`
+
 v6.0.0 (2017-01-30)
 ---
 - Added support for the Elasticsearch 6

LICENSE

+The MIT License (MIT)
 Copyright (c) 2014-2016 NFQ Technologies UAB
+Copyright (c) 2023 Bistro.sk Ltd.
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal