Update duckdb index files

.gitattributes

@@ -169,3 +169,4 @@ voidful--commonvoice_10_unit/ig.validation/index.duckdb filter=lfs diff=lfs merg
 voidful--commonvoice_10_unit/it.test/index.duckdb filter=lfs diff=lfs merge=lfs -text
 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.test/index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:86f1bf4dcfc77bf76fcd90fab54e55fcf8801cefbd453ad207956f5917561bff
+size 4730880