Update duckdb index files

.gitattributes

@@ -66,3 +66,4 @@ iwslt2017-en-nl/train/index.duckdb filter=lfs diff=lfs merge=lfs -text
 iwslt2017-en-nl/test/index.duckdb filter=lfs diff=lfs merge=lfs -text
 iwslt2017-en-nl/validation/index.duckdb filter=lfs diff=lfs merge=lfs -text
 iwslt2017-en-ro/train/index.duckdb filter=lfs diff=lfs merge=lfs -text
+iwslt2017-en-ro/test/index.duckdb filter=lfs diff=lfs merge=lfs -text

iwslt2017-en-ro/test/index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:40b74adcf69337e7ec9d1d5ffd9770b800ddf99089ec5742f0254f97771f6fca
+size 1323008