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
+xmj2002--Chinese_modern_classical/train/index.duckdb filter=lfs diff=lfs merge=lfs -text

xmj2002--Chinese_modern_classical/train/index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:d7d979e0de464c2dc394582a8acc1e62f301e3205c8a3a87f4b3a388dfb306a8
+size 128462848