Update duckdb index files

.gitattributes

@@ -252,3 +252,4 @@ pt-faq-domain/train/index.duckdb filter=lfs diff=lfs merge=lfs -text
 vi-all-question/train/index.duckdb filter=lfs diff=lfs merge=lfs -text
 en-cqa-page/partial-train/index.duckdb filter=lfs diff=lfs merge=lfs -text
 de-faq-page/partial-train/index.duckdb filter=lfs diff=lfs merge=lfs -text
+ja-all-question/partial-train/index.duckdb filter=lfs diff=lfs merge=lfs -text

ja-all-question/partial-train/index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:3ca5260e987643ed9b7966c163026e99a5ec79bf069be5a539109f8087332387
+size 5902446592