Update duckdb index files

.gitattributes

@@ -7,3 +7,4 @@ arbml--ANS_claim/test/0000.parquet filter=lfs diff=lfs merge=lfs -text
 default/train/0000.parquet filter=lfs diff=lfs merge=lfs -text
 default/validation/0000.parquet filter=lfs diff=lfs merge=lfs -text
 default/test/0000.parquet filter=lfs diff=lfs merge=lfs -text
+default/test/index.duckdb filter=lfs diff=lfs merge=lfs -text

default/test/index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:cf02da779b38d257e96a63ef8e6ea655ad36132a98cf7c4b8ac1c09afd374839
+size 1060864