infra: switch to readonly token in travis
infra: switch to readonly token in travis

rnveach/checkstyle,nikhilgupta23/checkstyle,checkstyle/checkstyle,rnveach/checkstyle,ilanKeshet/checkstyle,sharang108/checkstyle,MEZk/checkstyle,bansalayush/checkstyle,sabaka/checkstyle,izishared/checkstyle,jonmbake/checkstyle,jochenvdv/checkstyle,romani/checkstyle,rnveach/checkstyle,jochenvdv/checkstyle,sharang108/checkstyle,rnveach/checkstyle,nikhilgupta23/checkstyle,jonmbake/checkstyle,rnveach/checkstyle,sabaka/checkstyle,checkstyle/checkstyle,MEZk/checkstyle,sirdis/checkstyle,romani/checkstyle,MEZk/checkstyle,nikhilgupta23/checkstyle,checkstyle/checkstyle,romani/checkstyle,liscju/checkstyle,romani/checkstyle,jochenvdv/checkstyle,sirdis/checkstyle,bansalayush/checkstyle,liscju/checkstyle,romani/checkstyle,ilanKeshet/checkstyle,checkstyle/checkstyle,izishared/checkstyle,AkshitaKukreja30/checkstyle,checkstyle/checkstyle,AkshitaKukreja30/checkstyle,sabaka/checkstyle,bansalayush/checkstyle,sharang108/checkstyle,jonmbake/checkstyle,AkshitaKukreja30/checkstyle,sirdis/checkstyle,rnveach/checkstyle,liscju/checkstyle,checkstyle/checkstyle,izishared/checkstyle,ilanKeshet/checkstyle,romani/checkstyle