Update duckdb index files

.gitattributes

@@ -2,3 +2,4 @@ filwsyl--ascend/test/index.duckdb filter=lfs diff=lfs merge=lfs -text
 filwsyl--ascend/train/index.duckdb filter=lfs diff=lfs merge=lfs -text
 filwsyl--ascend/validation/index.duckdb filter=lfs diff=lfs merge=lfs -text
 default/train/index.duckdb filter=lfs diff=lfs merge=lfs -text
+default/validation/index.duckdb filter=lfs diff=lfs merge=lfs -text

default/validation/index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:28aa5400d3e3675da21979fdd9b436a259fd884acd8389cd3f7c1dbcf85b7d60
+size 1323008