[{_id:"65b26e3b9fd1100007f05d0b",values:["0123456789",""]}]

db.collection.update({_id:"65b26e3b9fd1100007f05d0b"},[{$set:{"values":{$concatArrays:[{$slice:["$values",1]},{$slice:["$values",{$add:[1,1]},{$size:"$values"}]}]}}}])