Update duckdb index files

.gitattributes

@@ -53,3 +53,4 @@ saved_model/**/* filter=lfs diff=lfs merge=lfs -text
 *.jpg filter=lfs diff=lfs merge=lfs -text
 *.jpeg filter=lfs diff=lfs merge=lfs -text
 *.webp filter=lfs diff=lfs merge=lfs -text
+Atom007--mc4-japanese-data/train/index.duckdb filter=lfs diff=lfs merge=lfs -text

Atom007--mc4-japanese-data/train/index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:51b51e68a359d1beeabed236d9623dc0aa041a1021d05e657a13141bb2e39237
+size 501755904