Update duckdb index files

.gitattributes

@@ -121,3 +121,4 @@ iwslt2017-zh-en/validation/index.duckdb filter=lfs diff=lfs merge=lfs -text
 iwslt2017-zh-en/train/index.duckdb filter=lfs diff=lfs merge=lfs -text
 iwslt2017-ro-nl/validation/index.duckdb filter=lfs diff=lfs merge=lfs -text
 iwslt2017-ro-nl/train/index.duckdb filter=lfs diff=lfs merge=lfs -text
+iwslt2017-ro-it/validation/index.duckdb filter=lfs diff=lfs merge=lfs -text

iwslt2017-ro-it/validation/index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:3d264e9dafb31f176e26c19ea13e5e3c82062950490f1e0da5c383fe2d7f8af5
+size 1060864