Update duckdb index files

.gitattributes

@@ -29,3 +29,4 @@ yxchar--sciie-tlm/test/index.duckdb filter=lfs diff=lfs merge=lfs -text
 yxchar--sciie-tlm/train/index.duckdb filter=lfs diff=lfs merge=lfs -text
 yxchar--sciie-tlm/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:c375cde84d4f5b28aedd04d68dc375f773a2756dc3d519c71b3e15d207705334
+size 1060864