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
+hakurei--megatron-dev-dataset/train/index.duckdb filter=lfs diff=lfs merge=lfs -text

hakurei--megatron-dev-dataset/train/index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:2008d7e39620810a7303830405f5bf503f2ad68c83228ebe21f0f58add81e892
+size 1847296