Update duckdb index files

.gitattributes

@@ -75,3 +75,4 @@ mr/train/index.duckdb filter=lfs diff=lfs merge=lfs -text
 ne/train/index.duckdb filter=lfs diff=lfs merge=lfs -text
 ny/train/index.duckdb filter=lfs diff=lfs merge=lfs -text
 pa/train/index.duckdb filter=lfs diff=lfs merge=lfs -text
+rn/train/index.duckdb filter=lfs diff=lfs merge=lfs -text

rn/train/index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:0bae7a03bdafeb75f91f24aa764d3b4fc034c8f5d816ea24ae3587df7a9566c5
+size 316944384