Update duckdb index files

.gitattributes

@@ -57,3 +57,4 @@ jxu124--invig/validation/index.duckdb filter=lfs diff=lfs merge=lfs -text
 jxu124--invig/test/index.duckdb filter=lfs diff=lfs merge=lfs -text
 default/test/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 sha256:0d37b359ee2a4d38f7c1558e253c22ea5906d2f8cc65a39fa9272ff4d6a0b3b8
+size 4993024