Update duckdb index files

.gitattributes

@@ -57,3 +57,4 @@ tasksource--CREPE/validation/index.duckdb filter=lfs diff=lfs merge=lfs -text
 tasksource--CREPE/test/index.duckdb filter=lfs diff=lfs merge=lfs -text
 tasksource--CREPE/train/index.duckdb filter=lfs diff=lfs merge=lfs -text
 default/train/index.duckdb filter=lfs diff=lfs merge=lfs -text
+default/validation/index.duckdb filter=lfs diff=lfs merge=lfs -text

default/validation/index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:38608c8abac5a7cfc771ee0724b0dff7000f1da586ef400d33e6bcabbf19c9f0
+size 37236736