Update duckdb index files

.gitattributes

@@ -63,3 +63,4 @@ saved_model/**/* filter=lfs diff=lfs merge=lfs -text
 2/validation/index.duckdb filter=lfs diff=lfs merge=lfs -text
 2/test/index.duckdb filter=lfs diff=lfs merge=lfs -text
 3/test/index.duckdb filter=lfs diff=lfs merge=lfs -text
+3/validation/index.duckdb filter=lfs diff=lfs merge=lfs -text

3/validation/index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:6a24dcdbb2ec303cd971b6eba082e527a37c6a27f417531195ed5e7def3993de
+size 2633728