Update duckdb index files

.gitattributes

@@ -494,3 +494,4 @@ default/pl.train/index.duckdb filter=lfs diff=lfs merge=lfs -text
 default/pl.validation/index.duckdb filter=lfs diff=lfs merge=lfs -text
 default/pt.test/index.duckdb filter=lfs diff=lfs merge=lfs -text
 default/or.train/index.duckdb filter=lfs diff=lfs merge=lfs -text
+default/lg.validation/index.duckdb filter=lfs diff=lfs merge=lfs -text

default/lg.validation/index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:36eebba43f35a0c94e193a7468916bec1f84d760e90f6eeb284ea864b1f48c9a
+size 11022336