Update duckdb index files

.gitattributes

@@ -55,3 +55,4 @@ saved_model/**/* filter=lfs diff=lfs merge=lfs -text
 *.webp filter=lfs diff=lfs merge=lfs -text
 default/anime.stackexchange.com/index.duckdb filter=lfs diff=lfs merge=lfs -text
 default/ja.stackoverflow.com/index.duckdb filter=lfs diff=lfs merge=lfs -text
+default/japanese.stackexchange.com/index.duckdb filter=lfs diff=lfs merge=lfs -text

default/japanese.stackexchange.com/index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:091190a75b39531c27cc2183a7c5921b37ade1295e5a3ab4150df472a812b93a
+size 132395008