Update duckdb index files

.gitattributes

@@ -160,3 +160,4 @@ default/zh_gsd_ud_train/index.duckdb filter=lfs diff=lfs merge=lfs -text
 default/hy_bsut_ud_train/index.duckdb filter=lfs diff=lfs merge=lfs -text
 default/fr_parisstories_ud_train/index.duckdb filter=lfs diff=lfs merge=lfs -text
 default/gv_cadhan_ud_train/index.duckdb filter=lfs diff=lfs merge=lfs -text
+default/ro_rrt_ud_train/index.duckdb filter=lfs diff=lfs merge=lfs -text

default/ro_rrt_ud_train/index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:a40499f6eec034ebe9984787259e8cd6506cec7ee54dd1f4819ac0b578f75f25
+size 33828864