Update duckdb index files

.gitattributes

@@ -56,3 +56,4 @@ With-augmentation/train/index.duckdb filter=lfs diff=lfs merge=lfs -text
 With-augmentation/validation/index.duckdb filter=lfs diff=lfs merge=lfs -text
 With-augmentation/test/index.duckdb filter=lfs diff=lfs merge=lfs -text
 Without-augmentation/train/index.duckdb filter=lfs diff=lfs merge=lfs -text
+Without-augmentation/validation/index.duckdb filter=lfs diff=lfs merge=lfs -text

Without-augmentation/validation/index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:f0f49aa613cb773ff9e913361cbbdcc482bd7c4582030a19bf369d73a1ddef30
+size 25440256