Update duckdb index files

.gitattributes

@@ -2,3 +2,4 @@ arbml--MASC/parquet-train.parquet filter=lfs diff=lfs merge=lfs -text
 arbml--MASC/train/index.duckdb filter=lfs diff=lfs merge=lfs -text
 arbml--MASC/train/0000.parquet filter=lfs diff=lfs merge=lfs -text
 default/train/0000.parquet filter=lfs diff=lfs merge=lfs -text
+default/train/index.duckdb filter=lfs diff=lfs merge=lfs -text

default/train/index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:b20ce0c2b32fb0353512cb7a9040adb33755573c7b48ed532ccf34a7570314b2
+size 5517312