config: revert version to 6.13-SNAPSHOT as build is invalid
config: revert version to 6.13-SNAPSHOT as build is invalid

MEZk/checkstyle,HubSpot/checkstyle,baratali/checkstyle,rnveach/checkstyle,liscju/checkstyle,liscju/checkstyle,romani/checkstyle,Bhavik3/checkstyle,sabaka/checkstyle,checkstyle/checkstyle,AkshitaKukreja30/checkstyle,vboerchers/checkstyle,AkshitaKukreja30/checkstyle,romani/checkstyle,rnveach/checkstyle,rnveach/checkstyle,checkstyle/checkstyle,sharang108/checkstyle,romani/checkstyle,jochenvdv/checkstyle,MEZk/checkstyle,baratali/checkstyle,sharang108/checkstyle,ilanKeshet/checkstyle,jonmbake/checkstyle,romani/checkstyle,sabaka/checkstyle,vboerchers/checkstyle,sirdis/checkstyle,ilanKeshet/checkstyle,romani/checkstyle,jasonchaffee/checkstyle,Bhavik3/checkstyle,ilanKeshet/checkstyle,bansalayush/checkstyle,bansalayush/checkstyle,nikhilgupta23/checkstyle,sabaka/checkstyle,jasonchaffee/checkstyle,HubSpot/checkstyle,checkstyle/checkstyle,jochenvdv/checkstyle,HubSpot/checkstyle,nikhilgupta23/checkstyle,sharang108/checkstyle,izishared/checkstyle,jochenvdv/checkstyle,checkstyle/checkstyle,checkstyle/checkstyle,bansalayush/checkstyle,rnveach/checkstyle,romani/checkstyle,nikhilgupta23/checkstyle,AkshitaKukreja30/checkstyle,checkstyle/checkstyle,MEZk/checkstyle,sirdis/checkstyle,jonmbake/checkstyle,baratali/checkstyle,rnveach/checkstyle,izishared/checkstyle,sirdis/checkstyle,liscju/checkstyle,rnveach/checkstyle,Bhavik3/checkstyle,vboerchers/checkstyle,jasonchaffee/checkstyle,izishared/checkstyle,jonmbake/checkstyle