Update duckdb index files

iwslt2017-en-ro/train/index.duckdb

@@ -1,3 +1,3 @@
 version https://git-lfs.github.com/spec/v1
-oid sha256:34343e5c4164c1708843f449366304435aaecd77da20cbfd332fb1da918d03da
-size 23867392
+oid sha256:e42a7df6096f6f55c6495232c2e51f71d21f0cc55f962f1fa4aaf09fdfec6c2c
+size 24653824