Update duckdb index files

.gitattributes

@@ -57,3 +57,4 @@ flow3rdown--MARS/validation/index.duckdb filter=lfs diff=lfs merge=lfs -text
 flow3rdown--MARS/test/index.duckdb filter=lfs diff=lfs merge=lfs -text
 default/train/index.duckdb filter=lfs diff=lfs merge=lfs -text
 default/validation/index.duckdb filter=lfs diff=lfs merge=lfs -text
+default/test/index.duckdb filter=lfs diff=lfs merge=lfs -text

default/test/index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:75b82814ea7d4e2e123f40481f282207ef5d516a323c11943b6d695566823ec1
+size 1323008