Update duckdb index files

.gitattributes

@@ -52,3 +52,4 @@ 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
+izumi-lab--llm-japanese-dataset/train/index.duckdb filter=lfs diff=lfs merge=lfs -text

izumi-lab--llm-japanese-dataset/train/index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:c9cb2bbd1abe745453e4f0af0d04cbe370721d18bca77b13ebdb5944bad07189
+size 1744580608