upgrade CI, closes #2295 (#2298)
upgrade CI, closes #2295 (#2298)


vlulla/data.table,jangorecki/data.table,jangorecki/data.table,Rdatatable/data.table,jangorecki/data.table,vlulla/data.table,Rdatatable/data.table,Rdatatable/data.table,vlulla/data.table,jangorecki/data.table,Rdatatable/data.table,vlulla/data.table