Update duckdb index files

.gitattributes

@@ -1,3 +1,4 @@
 SetFit--wsc_fixed/test/index.duckdb filter=lfs diff=lfs merge=lfs -text
 SetFit--wsc_fixed/train/index.duckdb filter=lfs diff=lfs merge=lfs -text
 SetFit--wsc_fixed/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 sha256:530ee8717083e36e464674918e1ce5a9fba7f28e6ad17385183ec1fe751e653a
+size 1060864