Update duckdb index files

.gitattributes

@@ -54,3 +54,4 @@ saved_model/**/* filter=lfs diff=lfs merge=lfs -text
 *.webp filter=lfs diff=lfs merge=lfs -text
 tasksource--subjectivity/train/index.duckdb filter=lfs diff=lfs merge=lfs -text
 tasksource--subjectivity/test/index.duckdb filter=lfs diff=lfs merge=lfs -text
+tasksource--subjectivity/validation/index.duckdb filter=lfs diff=lfs merge=lfs -text

tasksource--subjectivity/validation/index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:dd063348ac74c2d5eb1a91659e27d73ad29371f74d8b998e698d2386964d3a16
+size 1060864