Update duckdb index files

.gitattributes

@@ -2,3 +2,4 @@ Lucapro--tx-data/json-train.parquet filter=lfs diff=lfs merge=lfs -text
 Lucapro--tx-data/train/index.duckdb filter=lfs diff=lfs merge=lfs -text
 Lucapro--tx-data/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 sha256:95b20f9fac0ce9f7b0c9a04cf0bfbe301c0d02525b10f742d55f0429bce5fb26
+size 7090176