Update duckdb index files

.gitattributes

@@ -41,3 +41,4 @@ saved_model/**/* filter=lfs diff=lfs merge=lfs -text
 *.wav filter=lfs diff=lfs merge=lfs -text
 naver-clova-ix--synthdog-zh/validation/index.duckdb filter=lfs diff=lfs merge=lfs -text
 default/partial-validation/index.duckdb filter=lfs diff=lfs merge=lfs -text
+default/partial-train/index.duckdb filter=lfs diff=lfs merge=lfs -text

default/partial-train/index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:ca9bfa975de275dd54b10359896689a29e693d26b33314237a7dad37b57e8471
+size 5202522112