Update duckdb index files

.gitattributes

@@ -55,3 +55,4 @@ saved_model/**/* filter=lfs diff=lfs merge=lfs -text
 tasksource--VUAC/test/index.duckdb filter=lfs diff=lfs merge=lfs -text
 tasksource--VUAC/train/index.duckdb filter=lfs diff=lfs merge=lfs -text
 tasksource--VUAC/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 sha256:87b7ba5c89c666a93ef909d25f2c9eba278697bddc2562be6c2dd9fb7f317679
+size 7090176