Update duckdb index files

.gitattributes

@@ -54,3 +54,4 @@ saved_model/**/* filter=lfs diff=lfs merge=lfs -text
 *.webp filter=lfs diff=lfs merge=lfs -text
 flowfree--crypto-news-headlines/train/index.duckdb filter=lfs diff=lfs merge=lfs -text
 flowfree--crypto-news-headlines/test/index.duckdb filter=lfs diff=lfs merge=lfs -text
+flowfree--crypto-news-headlines/validation/index.duckdb filter=lfs diff=lfs merge=lfs -text

flowfree--crypto-news-headlines/validation/index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:bb1c7fddd479618d867598d2a9359db6549f553b069f8e4a91fc1d155f0559b1
+size 1060864