Update duckdb index files

.gitattributes

@@ -5,3 +5,4 @@ eliwill--Lincoln/train/0000.parquet filter=lfs diff=lfs merge=lfs -text
 eliwill--Lincoln/validation/0000.parquet filter=lfs diff=lfs merge=lfs -text
 default/train/0000.parquet filter=lfs diff=lfs merge=lfs -text
 default/validation/0000.parquet 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 sha256:0e41b5e647472d476c1d65693d20689c50b71472837ae8c8d07b860126a9be35
+size 1060864