Update duckdb index files

.gitattributes

@@ -2,3 +2,4 @@ arbml--OSAC_CNN/parquet-train.parquet filter=lfs diff=lfs merge=lfs -text
 arbml--OSAC_CNN/train/index.duckdb filter=lfs diff=lfs merge=lfs -text
 arbml--OSAC_CNN/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 sha256:6764dce4ef7efb02791b52ef9d36723a5d123eea37e51ed93e24fee771f6c2bb
+size 18624512