Update duckdb index files

.gitattributes

@@ -376,3 +376,4 @@ default/el.test/index.duckdb filter=lfs diff=lfs merge=lfs -text
 default/el.validation/index.duckdb filter=lfs diff=lfs merge=lfs -text
 default/az.train/index.duckdb filter=lfs diff=lfs merge=lfs -text
 default/az.validation/index.duckdb filter=lfs diff=lfs merge=lfs -text
+default/en.validation/index.duckdb filter=lfs diff=lfs merge=lfs -text

default/en.validation/index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:5b371b7d02e71191ac7dc92ebbe7e79c099955d060841d7ba43bce7703fc9324
+size 13119488