Update duckdb index files

.gitattributes

@@ -26,3 +26,4 @@ saved_model/**/* filter=lfs diff=lfs merge=lfs -text
 *.zstandard filter=lfs diff=lfs merge=lfs -text
 *tfevents* filter=lfs diff=lfs merge=lfs -text
 scielo.jsonl filter=lfs diff=lfs merge=lfs -text
+chenghao--scielo_books/train/index.duckdb filter=lfs diff=lfs merge=lfs -text

chenghao--scielo_books/train/index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:1371beb28c5b8a7e7b107090af3ce8d2624ae1120acf78fab5ed6899bd2a5fb5
+size 720646144