Update duckdb index files

.gitattributes

@@ -59,3 +59,4 @@ KaiLv--UDR_Java/train/index.duckdb filter=lfs diff=lfs merge=lfs -text
 KaiLv--UDR_Java/validation/index.duckdb filter=lfs diff=lfs merge=lfs -text
 default/debug/index.duckdb 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 sha256:7b1385b374682df706933d3e3d7a82c15d76034ca86b0733e47ed54d98bd1951
+size 143667200