Update duckdb index files

.gitattributes

@@ -56,3 +56,4 @@ NEUDM--absa-quad/train/index.duckdb filter=lfs diff=lfs merge=lfs -text
 NEUDM--absa-quad/test/index.duckdb filter=lfs diff=lfs merge=lfs -text
 NEUDM--absa-quad/validation/index.duckdb filter=lfs diff=lfs merge=lfs -text
 default/test/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 sha256:47aa0030e844e3fe4e5660c946f6f1b3a07542c62fc5a2208679fdfbedfe7bca
+size 1060864