Update duckdb index files

.gitattributes

@@ -42,3 +42,4 @@ saved_model/**/* filter=lfs diff=lfs merge=lfs -text
 naver-clova-ix--synthdog-ko/validation/index.duckdb filter=lfs diff=lfs merge=lfs -text
 default/validation/index.duckdb filter=lfs diff=lfs merge=lfs -text
 default/train/partial-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 sha256:1f21d85895c8bbf80aedb679b4ab3f68d79909c39ade5126bc05d1d3ce6e2608
+size 40382464