Update duckdb index files

.gitattributes

@@ -68,3 +68,4 @@ kin/test/index.duckdb filter=lfs diff=lfs merge=lfs -text
 kin/train/index.duckdb filter=lfs diff=lfs merge=lfs -text
 kin/validation/index.duckdb filter=lfs diff=lfs merge=lfs -text
 swa/test/index.duckdb filter=lfs diff=lfs merge=lfs -text
+swa/train/index.duckdb filter=lfs diff=lfs merge=lfs -text

swa/train/index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:dc23ce06199d2836f5a020f99feaa86a4c95f10b40c92e1f1683f4f275fab441
+size 1060864