Update duckdb index files

.gitattributes

@@ -54,3 +54,4 @@ 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
 felixdae--openwebtext-wordlength/test/index.duckdb filter=lfs diff=lfs merge=lfs -text
+felixdae--openwebtext-wordlength/valid/index.duckdb filter=lfs diff=lfs merge=lfs -text

felixdae--openwebtext-wordlength/valid/index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:2114d8c0ac1f05ea8ee5596bdc9edc097271451f1970d5750fe7b35f936a6a32
+size 125579264