Update duckdb index files

.gitattributes

@@ -29,3 +29,4 @@ test.csv filter=lfs diff=lfs merge=lfs -text
 validation.csv filter=lfs diff=lfs merge=lfs -text
 train.csv filter=lfs diff=lfs merge=lfs -text
 bhadresh-savani--web_split/train/index.duckdb filter=lfs diff=lfs merge=lfs -text
+bhadresh-savani--web_split/validation/index.duckdb filter=lfs diff=lfs merge=lfs -text

bhadresh-savani--web_split/validation/index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:60fffbeb24c7c07ad7a7a23af01cfad46af4639af945499a4b564e4263ced680
+size 12595200