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
 emozilla--booksum-summary-analysis/test/index.duckdb filter=lfs diff=lfs merge=lfs -text
 emozilla--booksum-summary-analysis/train/index.duckdb filter=lfs diff=lfs merge=lfs -text
+emozilla--booksum-summary-analysis/validation/index.duckdb filter=lfs diff=lfs merge=lfs -text

emozilla--booksum-summary-analysis/validation/index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:d271630e9caed1b6691cd691a5440a79a3e06c2cfefee9c0feeccafc740e61de
+size 46936064