Update duckdb index files

.gitattributes

@@ -2,3 +2,4 @@ arbml--HTL/parquet-train.parquet filter=lfs diff=lfs merge=lfs -text
 arbml--HTL/train/index.duckdb filter=lfs diff=lfs merge=lfs -text
 arbml--HTL/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 sha256:2942324c20841f8feb7aea50ae7ea07a38ad4ad0690bba52f3d887d35ba3fcda
+size 24129536