Update duckdb index files

.gitattributes

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

tasksource--folio/validation/index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:b98ccd1b65b5aa84017a0c52bf9b8d280164e98232cf557ac4785342ca52395a
+size 1060864