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
+nehaninc--base-japanese-middle/train/index.duckdb filter=lfs diff=lfs merge=lfs -text

nehaninc--base-japanese-middle/train/index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:89cda3e706b0b06e975960e677035a811a93b8d09e134a711fc25b15f9574cbc
+size 348925952