Update duckdb index files

.gitattributes

@@ -375,3 +375,4 @@ default/dv.validation/index.duckdb filter=lfs diff=lfs merge=lfs -text
 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/az.validation/index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:15dab34bb9c374d242bb4d937f22ce84765b15786f7ab1d9c86d5361b10d5609
+size 1060864