Update duckdb index files

.gitattributes

@@ -2,3 +2,4 @@ arbml--watan_2004/parquet-train.parquet filter=lfs diff=lfs merge=lfs -text
 arbml--watan_2004/train/index.duckdb filter=lfs diff=lfs merge=lfs -text
 arbml--watan_2004/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:d0e004950f28a879aaba61211891bea62ffebd5774694f9bb9cfa39a01aa4c6c
+size 70004736