Update duckdb index files

.gitattributes

@@ -1,3 +1,4 @@
 DrMacabre--disco/imagefolder-train.parquet filter=lfs diff=lfs merge=lfs -text
 DrMacabre--disco/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 sha256:6a2072f784b9fad4b5d7afc292629b6e419d588798b4c5aafe9299bea28daf8d
+size 9187328