Update duckdb index files

.gitattributes

@@ -1,3 +1,4 @@
 skorkmaz88--iris/parquet-train.parquet filter=lfs diff=lfs merge=lfs -text
 skorkmaz88--iris/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 sha256:5b1ea4cdbe2017dfb3139b3a115d9bb097f8a78de739b791633f2cad87acf95a
+size 1060864