Update duckdb index files

.gitattributes

@@ -55,3 +55,4 @@ saved_model/**/* filter=lfs diff=lfs merge=lfs -text
 *.webp filter=lfs diff=lfs merge=lfs -text
 sudy-super--dialogsum-ja/test/index.duckdb filter=lfs diff=lfs merge=lfs -text
 sudy-super--dialogsum-ja/train/index.duckdb filter=lfs diff=lfs merge=lfs -text
+sudy-super--dialogsum-ja/validation/index.duckdb filter=lfs diff=lfs merge=lfs -text

sudy-super--dialogsum-ja/validation/index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:a10be9b07740abceb8488362bf7bc5f786bb6e1bf479f8c34d5bf38048ea4f60
+size 1323008