Update duckdb index files

.gitattributes

@@ -170,3 +170,4 @@ voidful--commonvoice_10_unit/it.test/index.duckdb filter=lfs diff=lfs merge=lfs
 voidful--commonvoice_10_unit/it.train/index.duckdb filter=lfs diff=lfs merge=lfs -text
 voidful--commonvoice_10_unit/it.validation/index.duckdb filter=lfs diff=lfs merge=lfs -text
 voidful--commonvoice_10_unit/ja.test/index.duckdb filter=lfs diff=lfs merge=lfs -text
+voidful--commonvoice_10_unit/ja.train/index.duckdb filter=lfs diff=lfs merge=lfs -text

voidful--commonvoice_10_unit/ja.train/index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:38da32f6bc73ec035abdeddcb2da75db3aad13eb78b02d0647d694c08920eadc
+size 5779456