Update duckdb index files

.gitattributes

@@ -49,3 +49,4 @@ train.jsonl filter=lfs diff=lfs merge=lfs -text
 SetFit--xglue_nc/test/index.duckdb filter=lfs diff=lfs merge=lfs -text
 SetFit--xglue_nc/validation/index.duckdb filter=lfs diff=lfs merge=lfs -text
 SetFit--xglue_nc/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 sha256:650a7a9fc4c48f48f316d124898fe901ff81826ec057e02f20d77cb41931db23
+size 429142016