Update duckdb index files

.gitattributes

@@ -367,3 +367,4 @@ hindi/train/index.duckdb filter=lfs diff=lfs merge=lfs -text
 persian/train/index.duckdb filter=lfs diff=lfs merge=lfs -text
 russian/train/index.duckdb filter=lfs diff=lfs merge=lfs -text
 portuguese/train/index.duckdb filter=lfs diff=lfs merge=lfs -text
+spanish/train/index.duckdb filter=lfs diff=lfs merge=lfs -text

spanish/train/index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:117f0b41a9d8e55c63305d2d71c5e5b356c03ee6f9254fd82a15e30721488ccd
+size 361508864