Update duckdb index files

.gitattributes

@@ -5,3 +5,4 @@ enimai--MuST-C-ru/validation/index.duckdb filter=lfs diff=lfs merge=lfs -text
 enimai--MuST-C-ru/train/0000.parquet filter=lfs diff=lfs merge=lfs -text
 default/train/0000.parquet filter=lfs diff=lfs merge=lfs -text
 default/test/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 sha256:86dd34cf2399c06a7b93d55112357d393c06e353fb52e89d983a8c7aa3c4d94a
+size 53489664