Update duckdb index files

.gitattributes

@@ -2,3 +2,4 @@ arbml--ArSAS/parquet-train.parquet filter=lfs diff=lfs merge=lfs -text
 arbml--ArSAS/train/index.duckdb filter=lfs diff=lfs merge=lfs -text
 arbml--ArSAS/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:ad84cd26db37f2532d5c111374793ca5be670b5186894c618846320b1121f03b
+size 10498048