Update duckdb index files

.gitattributes

@@ -441,3 +441,4 @@ default/ig.test/index.duckdb filter=lfs diff=lfs merge=lfs -text
 default/kab.validation/index.duckdb filter=lfs diff=lfs merge=lfs -text
 default/kk.test/index.duckdb filter=lfs diff=lfs merge=lfs -text
 default/ka.validation/index.duckdb filter=lfs diff=lfs merge=lfs -text
+default/kk.validation/index.duckdb filter=lfs diff=lfs merge=lfs -text

default/kk.validation/index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:6f75d561b3540925494c147ad28650054d2206df5a6872476b60e9f2b3739bca
+size 1060864