docs: prepare changelog for 42.2.3 release
docs: prepare changelog for 42.2.3 release

davecramer/pgjdbc,pgjdbc/pgjdbc,pgjdbc/pgjdbc,marschall/pgjdbc,jorsol/pgjdbc,sehrope/pgjdbc,jorsol/pgjdbc,davecramer/pgjdbc,AlexElin/pgjdbc,jorsol/pgjdbc,sehrope/pgjdbc,golovnin/pgjdbc,sehrope/pgjdbc,golovnin/pgjdbc,AlexElin/pgjdbc,marschall/pgjdbc,jorsol/pgjdbc,davecramer/pgjdbc,pgjdbc/pgjdbc,sehrope/pgjdbc,pgjdbc/pgjdbc,davecramer/pgjdbc,golovnin/pgjdbc,AlexElin/pgjdbc,marschall/pgjdbc,marschall/pgjdbc