Update duckdb index files

.gitattributes

@@ -1,3 +1,4 @@
 siberspace--keke/imagefolder-train.parquet filter=lfs diff=lfs merge=lfs -text
 siberspace--keke/train/0000.parquet filter=lfs diff=lfs merge=lfs -text
 default/train/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:bf5f421e8d8b7dc8ee17c94db8a7ac6e918d32d1ca388f10f185a7a63ff09581
+size 3158016