Update duckdb index files

.gitattributes

@@ -55,3 +55,4 @@ saved_model/**/* filter=lfs diff=lfs merge=lfs -text
 *.webp filter=lfs diff=lfs merge=lfs -text
 tasksource--leandojo/validation/index.duckdb filter=lfs diff=lfs merge=lfs -text
 tasksource--leandojo/test/index.duckdb filter=lfs diff=lfs merge=lfs -text
+tasksource--leandojo/train/index.duckdb filter=lfs diff=lfs merge=lfs -text

tasksource--leandojo/train/index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:1899363eb68458fbafff05ddf7905e9bd95055a4c57d8b41b6f142ed3bca3864
+size 259010560