Update duckdb index files

.gitattributes

@@ -674,3 +674,4 @@ san_Latn/train/index.duckdb filter=lfs diff=lfs merge=lfs -text
 san_Latn/dev/index.duckdb filter=lfs diff=lfs merge=lfs -text
 ben_Beng/partial-train/index.duckdb filter=lfs diff=lfs merge=lfs -text
 che_Cyrl/train/index.duckdb filter=lfs diff=lfs merge=lfs -text
+cjk_Latn/train/index.duckdb filter=lfs diff=lfs merge=lfs -text

cjk_Latn/train/index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:a8a7eab41494531bbf44a4952be2aa5d4cdba7ccc464ab23d60d63d76ed47492
+size 1323008