Update parquet files

default/demo-train.parquet

@@ -1,3 +1,3 @@
 version https://git-lfs.github.com/spec/v1
-oid sha256:465f052dd98e038ef72d764f2d719b939313e37254175f2b8b0eb7a339c0869f
-size 91810618
+oid sha256:457638b8b4fdbe5c1243d1549aeec9f984c721660725936159e7c7cc8c39d953
+size 887