Update duckdb index files

.gitattributes

@@ -55,3 +55,4 @@ saved_model/**/* filter=lfs diff=lfs merge=lfs -text
 d0rj--samsum-ru/test/index.duckdb filter=lfs diff=lfs merge=lfs -text
 d0rj--samsum-ru/train/index.duckdb filter=lfs diff=lfs merge=lfs -text
 d0rj--samsum-ru/validation/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 sha256:008d42be0f3f2bbff75c77a8eb17688c9caa0086167d10091b66e7dbb0a7f7f8
+size 25964544