Update duckdb index files

.gitattributes

@@ -72,3 +72,4 @@ go-complex-SI/train/index.duckdb filter=lfs diff=lfs merge=lfs -text
 go-complex-SI/validation/index.duckdb filter=lfs diff=lfs merge=lfs -text
 schemaorg-atomic-SI/test/index.duckdb filter=lfs diff=lfs merge=lfs -text
 schemaorg-atomic-SI/train/index.duckdb filter=lfs diff=lfs merge=lfs -text
+schemaorg-atomic-SI/validation/index.duckdb filter=lfs diff=lfs merge=lfs -text

schemaorg-atomic-SI/validation/index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:66794c57f82120e88c065f6eda69a6bcd41a3794e525dc5efc39eb27c6e20161
+size 1060864