Update duckdb index files

.gitattributes

@@ -40,3 +40,4 @@ saved_model/**/* filter=lfs diff=lfs merge=lfs -text
 *.ogg filter=lfs diff=lfs merge=lfs -text
 *.wav filter=lfs diff=lfs merge=lfs -text
 naver-clova-ix--synthdog-en/validation/index.duckdb filter=lfs diff=lfs merge=lfs -text
+default/partial-validation/index.duckdb filter=lfs diff=lfs merge=lfs -text

default/partial-validation/index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:cb287203aa396a17b92d934d027b8857c38ce5cdbf346d08d10a226d7bbd3308
+size 42479616