Update duckdb index files

.gitattributes

@@ -42,3 +42,4 @@ saved_model/**/* filter=lfs diff=lfs merge=lfs -text
 naver-clova-ix--synthdog-ja/validation/index.duckdb filter=lfs diff=lfs merge=lfs -text
 default/partial-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/train/partial-index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:df97a4f71f9d78ba82d70ba62a47412157272c1d9b6692537047b8e6c36e1e12
+size 5175259136