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
 samchain--BIS_Speeches_97_23/test/index.duckdb filter=lfs diff=lfs merge=lfs -text
+samchain--BIS_Speeches_97_23/train/index.duckdb filter=lfs diff=lfs merge=lfs -text

samchain--BIS_Speeches_97_23/train/index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:5439c28dbce682e1a0c042b88d1cc7848e0e865700e2ab808166420c79eaf399
+size 568602624