Update duckdb index files

.gitattributes

@@ -55,3 +55,4 @@ saved_model/**/* filter=lfs diff=lfs merge=lfs -text
 yankihue--TLDR/validation/index.duckdb filter=lfs diff=lfs merge=lfs -text
 yankihue--TLDR/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 sha256:4fde66d0b62ff02876ab011af6c657706253a548427b1b05815a09d0aaa29df1
+size 11022336