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
 corpus_de.jsonl filter=lfs diff=lfs merge=lfs -text
 Stern5497--corpus/train/index.duckdb filter=lfs diff=lfs merge=lfs -text
+default/train/index.duckdb filter=lfs diff=lfs merge=lfs -text

default/train/index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:cecab69baaa4d113d5d9f34fc3116aeda5a525378c357915dbcf3e8d03d661e9
+size 562835456