Update duckdb index files

iwslt2017-ar-en/train/index.duckdb

@@ -1,3 +1,3 @@
 version https://git-lfs.github.com/spec/v1
-oid sha256:9aa30b917b230c036af1769ff35a3938f8e620cb3114f1bd3ede6f28c5dcd189
-size 26750976
+oid sha256:f6e299aa28979541f9a30a8a4acce79b4ccd648b28597a6a30e5fce47bf40f5c
+size 27013120