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
 abertsch--booksum-fullbooks/test/index.duckdb filter=lfs diff=lfs merge=lfs -text
 abertsch--booksum-fullbooks/train/index.duckdb filter=lfs diff=lfs merge=lfs -text
+abertsch--booksum-fullbooks/validation/index.duckdb filter=lfs diff=lfs merge=lfs -text

abertsch--booksum-fullbooks/validation/index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:17e6f5c59364f8738ffda9699455a2416a511a3b6e338423cafd754270070d8a
+size 22556672