Update play-json to 2.6.0-M4 (#7022)
Update play-json to 2.6.0-M4 (#7022)


ktoso/playframework,ktoso/playframework,mkurz/playframework,rajeshpg/playframework,playframework/playframework,Shenker93/playframework,marcospereira/playframework,Shruti9520/playframework,marcospereira/playframework,mkurz/playframework,benmccann/playframework,rajeshpg/playframework,wegtam/playframework,richdougherty/playframework,ktoso/playframework,Shruti9520/playframework,wegtam/playframework,zaneli/playframework,aradchykov/playframework,benmccann/playframework,wegtam/playframework,Shruti9520/playframework,hagl/playframework,richdougherty/playframework,hagl/playframework,zaneli/playframework,zaneli/playframework,wegtam/playframework,rajeshpg/playframework,Shenker93/playframework,richdougherty/playframework,marcospereira/playframework,benmccann/playframework,wsargent/playframework,aradchykov/playframework,wsargent/playframework,wsargent/playframework,benmccann/playframework,wsargent/playframework,aradchykov/playframework,mkurz/playframework,marcospereira/playframework,aradchykov/playframework,richdougherty/playframework,playframework/playframework,Shenker93/playframework,mkurz/playframework,ktoso/playframework,playframework/playframework,rajeshpg/playframework,hagl/playframework,Shenker93/playframework,hagl/playframework,zaneli/playframework,Shruti9520/playframework