Update duckdb index files

.gitattributes

@@ -247,3 +247,4 @@ it_ja/sampled_validation/index.duckdb filter=lfs diff=lfs merge=lfs -text
 ja_ar/sampled_validation/index.duckdb filter=lfs diff=lfs merge=lfs -text
 ja_cs/validation/index.duckdb filter=lfs diff=lfs merge=lfs -text
 ja_ar/train/index.duckdb filter=lfs diff=lfs merge=lfs -text
+ar_zh/test/index.duckdb filter=lfs diff=lfs merge=lfs -text

ar_zh/test/index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:7545ee3aab922c5b78c6438191172eecd646f11ee62feb59e90d9600588d9a39
+size 52965376