Update duckdb index files

.gitattributes

@@ -29,3 +29,4 @@ wic/test/index.duckdb filter=lfs diff=lfs merge=lfs -text
 wic/train/index.duckdb filter=lfs diff=lfs merge=lfs -text
 wic/validation/index.duckdb filter=lfs diff=lfs merge=lfs -text
 wsc/test/index.duckdb filter=lfs diff=lfs merge=lfs -text
+wsc/train/index.duckdb filter=lfs diff=lfs merge=lfs -text

wsc/train/index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:e8dd2436dba8b21f12d872f30dd02969362f609d1227a7eb94c8695f30a7c76b
+size 1060864