Update duckdb index files

.gitattributes

@@ -53,3 +53,4 @@ saved_model/**/* filter=lfs diff=lfs merge=lfs -text
 *.jpeg filter=lfs diff=lfs merge=lfs -text
 *.webp filter=lfs diff=lfs merge=lfs -text
 ragarwal--NLI-Mix/test/index.duckdb filter=lfs diff=lfs merge=lfs -text
+ragarwal--NLI-Mix/validation/index.duckdb filter=lfs diff=lfs merge=lfs -text

ragarwal--NLI-Mix/validation/index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:81f066f65d2949b75faf52cb4944aee1f7a340b08b5c15ec988592221a2135de
+size 53489664