Update duckdb index files

.gitattributes

@@ -5,3 +5,4 @@ en/train/index.duckdb filter=lfs diff=lfs merge=lfs -text
 en/validation/index.duckdb filter=lfs diff=lfs merge=lfs -text
 en/test/index.duckdb filter=lfs diff=lfs merge=lfs -text
 es/test/index.duckdb filter=lfs diff=lfs merge=lfs -text
+es/train/index.duckdb filter=lfs diff=lfs merge=lfs -text

es/train/index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:442e6dffba21b611c21ab761dc824d8a199add13c6fc2162b9324aad240dedce
+size 1847296