Update duckdb index files

.gitattributes

@@ -53,3 +53,4 @@ 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
 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/train/index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:24693a2333595a54d542b68404f45b75a7e9dbe7241e06b9ae4b13c710080f31
+size 221786112