Update duckdb index files

.gitattributes

@@ -5,3 +5,4 @@ Bauyrjan--kkcorp/validation/index.duckdb filter=lfs diff=lfs merge=lfs -text
 Bauyrjan--kkcorp/train/0000.parquet filter=lfs diff=lfs merge=lfs -text
 default/train/0000.parquet filter=lfs diff=lfs merge=lfs -text
 default/test/index.duckdb 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 sha256:09fb90e38edc0fc9d5766647c10e90fc1780b22a70932fe71eb515e9bdb1249f
+size 5255168