Update duckdb index files

iwslt2017-it-en/train/index.duckdb

@@ -1,3 +1,3 @@
 version https://git-lfs.github.com/spec/v1
-oid sha256:d440d20bc7d58e29d5ef88a0f28090ed59baef8b7da2f8b30c9d2ea1fc82bc6c
-size 24915968
+oid sha256:4613fdf35a91744739081667679a478166d2423595f0a4a1a5a33c60305c1d60
+size 25178112