Update duckdb index files

.gitattributes

@@ -206,3 +206,4 @@ svamp_structured/validation/index.duckdb filter=lfs diff=lfs merge=lfs -text
 svamp_structured/test/index.duckdb filter=lfs diff=lfs merge=lfs -text
 singleq/validation/index.duckdb filter=lfs diff=lfs merge=lfs -text
 singleq/train/index.duckdb filter=lfs diff=lfs merge=lfs -text
+singleq/test/index.duckdb filter=lfs diff=lfs merge=lfs -text

singleq/test/index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:5250bdd86d94e6f569b65db217b3b860e3b7422d8eb5e71e7c3140354fe9669c
+size 1060864