Update duckdb index files

.gitattributes

@@ -2,3 +2,4 @@ Ngadou--Spam_SMS/csv-train.parquet filter=lfs diff=lfs merge=lfs -text
 Ngadou--Spam_SMS/train/index.duckdb filter=lfs diff=lfs merge=lfs -text
 Ngadou--Spam_SMS/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:c48b42f88f4f9e50dd5d68bf21ed52e225349c8ac48e116ec5394b991e716859
+size 10760192