Update duckdb index files

.gitattributes

@@ -3,3 +3,4 @@ jonathanli--legal-advice-reddit/json-test.parquet filter=lfs diff=lfs merge=lfs
 jonathanli--legal-advice-reddit/json-validation.parquet filter=lfs diff=lfs merge=lfs -text
 jonathanli--legal-advice-reddit/train/index.duckdb filter=lfs diff=lfs merge=lfs -text
 jonathanli--legal-advice-reddit/test/index.duckdb filter=lfs diff=lfs merge=lfs -text
+jonathanli--legal-advice-reddit/validation/index.duckdb filter=lfs diff=lfs merge=lfs -text

jonathanli--legal-advice-reddit/validation/index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:2ff3ad1ecd74b88d9f7b24fcb1c6b6f58dc334914c8d7e311fc88bd7e14dc5ad
+size 33566720