Update duckdb index files

.gitattributes

@@ -79,3 +79,4 @@ rn/train/index.duckdb filter=lfs diff=lfs merge=lfs -text
 rw/train/index.duckdb filter=lfs diff=lfs merge=lfs -text
 sw/train/index.duckdb filter=lfs diff=lfs merge=lfs -text
 ta/train/index.duckdb filter=lfs diff=lfs merge=lfs -text
+tn/train/index.duckdb filter=lfs diff=lfs merge=lfs -text

tn/train/index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:4575eea01155a8ed55a105881eb9ab2c45ef2a167f95d95f418ffbe0b1c7366e
+size 338702336