Update duckdb index files

.gitattributes

@@ -72,3 +72,4 @@ nso/train/index.duckdb filter=lfs diff=lfs merge=lfs -text
 sn/train/index.duckdb filter=lfs diff=lfs merge=lfs -text
 te/train/index.duckdb filter=lfs diff=lfs merge=lfs -text
 mr/train/index.duckdb filter=lfs diff=lfs merge=lfs -text
+ne/train/index.duckdb filter=lfs diff=lfs merge=lfs -text

ne/train/index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:521a673e16f946baa99878dd3997e852f64df254b4e664810c877efe1f6d7bd0
+size 513552384