Update duckdb index files

.gitattributes

@@ -73,3 +73,4 @@ iwslt2017-en-fr/validation/index.duckdb filter=lfs diff=lfs merge=lfs -text
 iwslt2017-en-ja/validation/index.duckdb filter=lfs diff=lfs merge=lfs -text
 iwslt2017-en-ar/train/index.duckdb filter=lfs diff=lfs merge=lfs -text
 iwslt2017-en-de/validation/index.duckdb filter=lfs diff=lfs merge=lfs -text
+iwslt2017-en-it/validation/index.duckdb filter=lfs diff=lfs merge=lfs -text

iwslt2017-en-it/validation/index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:f114e613ab02bf470461b50280d237b469130e0e6df9f7021c0b9c6a3cf97064
+size 1060864