Should move away from deprecated Json::Reader::Reader() #30
Description
elasticlient/src/bulk.cc:167:18: warning: ‘Json::Reader::Reader()’ is deprecated: Use CharReader and CharReaderBuilder instead [-Wdeprecated-declarations]
167 | Json::Reader reader;
elasticlient/src/scroll.cc:62:18: warning: ‘Json::Reader::Reader()’ is deprecated: Use CharReader and CharReaderBuilder instead [-Wdeprecated-declarations]
62 | Json::Reader reader;
| ^~~~~~