config: bump checkstyle to 8.1
config: bump checkstyle to 8.1
rnveach/contribution,checkstyle/contribution,rnveach/contribution,rnveach/contribution,rnveach/contribution,rnveach/contribution,checkstyle/contribution,checkstyle/contribution,checkstyle/contribution,checkstyle/contribution,checkstyle/contribution,rnveach/contribution,rnveach/contribution,checkstyle/contribution