Update duckdb index files

.gitattributes

@@ -84,3 +84,4 @@ iwslt2017-en-nl/test/index.duckdb filter=lfs diff=lfs merge=lfs -text
 iwslt2017-it-nl/train/index.duckdb filter=lfs diff=lfs merge=lfs -text
 iwslt2017-fr-en/train/index.duckdb filter=lfs diff=lfs merge=lfs -text
 iwslt2017-en-nl/train/index.duckdb filter=lfs diff=lfs merge=lfs -text
+iwslt2017-en-ro/validation/index.duckdb filter=lfs diff=lfs merge=lfs -text

iwslt2017-en-ro/validation/index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:a043deb5c6c4005d446d6c27f88bcceb5b300ad3aaf7606f0215d0a36c09e17f
+size 1060864