Update duckdb index files

.gitattributes

@@ -1,3 +1,4 @@
 mbyanfei--amazon-shoe-reviews/parquet-test.parquet filter=lfs diff=lfs merge=lfs -text
 mbyanfei--amazon-shoe-reviews/parquet-train.parquet filter=lfs diff=lfs merge=lfs -text
 mbyanfei--amazon-shoe-reviews/test/index.duckdb filter=lfs diff=lfs merge=lfs -text
+mbyanfei--amazon-shoe-reviews/train/index.duckdb filter=lfs diff=lfs merge=lfs -text

mbyanfei--amazon-shoe-reviews/train/index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:c30b4d3eea1bd30dc5d848cc071c695e40f2121125c5cce1895ce68ab33ce276
+size 30420992