Update duckdb index files

.gitattributes

@@ -56,3 +56,4 @@ saved_model/**/* filter=lfs diff=lfs merge=lfs -text
 MLRush--oasst1/train/index.duckdb filter=lfs diff=lfs merge=lfs -text
 MLRush--oasst1/validation/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 sha256:737a3311b0729bf71448b8cfbb775504f20c078f51d7637f84a669b04dcd94e4
+size 1060864