Update duckdb index files

.gitattributes

@@ -42,3 +42,4 @@ saved_model/**/* filter=lfs diff=lfs merge=lfs -text
 QuoQA-NLP--KoCC3M/validation/index.duckdb filter=lfs diff=lfs merge=lfs -text
 QuoQA-NLP--KoCC3M/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:b77636307fb631d88645d08d0d238b836ad87d8549652be1f8a78c81c81efffc
+size 7352320