Update duckdb index files

.gitattributes

@@ -1,3 +1,4 @@
 sfdkiaei--EAS/text-train.parquet filter=lfs diff=lfs merge=lfs -text
 sfdkiaei--EAS/train/index.duckdb 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:f3c828b2252d08cfb5aad16f3e50b34aab7fb8e82b20d9a305d94c134abafc85
+size 20459520