Update duckdb index files

.gitattributes

@@ -55,3 +55,4 @@ saved_model/**/* filter=lfs diff=lfs merge=lfs -text
 tasksource--MOH/test/index.duckdb filter=lfs diff=lfs merge=lfs -text
 tasksource--MOH/train/index.duckdb filter=lfs diff=lfs merge=lfs -text
 tasksource--MOH/validation/index.duckdb 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:c473c4c715722ba685eacc3c69c8554a986453df506b00f23edf120c8a6ad197
+size 1323008