Update duckdb index files

.gitattributes

@@ -53,3 +53,4 @@ saved_model/**/* filter=lfs diff=lfs merge=lfs -text
 *.jpeg filter=lfs diff=lfs merge=lfs -text
 *.webp filter=lfs diff=lfs merge=lfs -text
 lucadiliello--naturalquestionsshortqa/train/index.duckdb filter=lfs diff=lfs merge=lfs -text
+lucadiliello--naturalquestionsshortqa/validation/index.duckdb filter=lfs diff=lfs merge=lfs -text

lucadiliello--naturalquestionsshortqa/validation/index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:0f3f000f4299a5575c71e881b266119d8371145a209f70d2d69c525bf13dd14f
+size 30945280