Update duckdb index files

.gitattributes

@@ -87,3 +87,4 @@ kaggle-04/test/index.duckdb filter=lfs diff=lfs merge=lfs -text
 kaggle-04/validation/index.duckdb filter=lfs diff=lfs merge=lfs -text
 gcd-04/train/index.duckdb filter=lfs diff=lfs merge=lfs -text
 babylon-04/test/index.duckdb filter=lfs diff=lfs merge=lfs -text
+babylon-04/validation/index.duckdb filter=lfs diff=lfs merge=lfs -text

babylon-04/validation/index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:27821e0e7d2d8f09dd2e101fec488b32ff1040e48ec4c93bfb619c6b75648e47
+size 1323008