Update duckdb index files

.gitattributes

@@ -55,3 +55,4 @@ saved_model/**/* filter=lfs diff=lfs merge=lfs -text
 *.webp filter=lfs diff=lfs merge=lfs -text
 s1/train/index.duckdb filter=lfs diff=lfs merge=lfs -text
 s2/train/index.duckdb filter=lfs diff=lfs merge=lfs -text
+s4/train/index.duckdb filter=lfs diff=lfs merge=lfs -text

s4/train/index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:2c426a243ca041d401b846c5251421df511280052c862bb049ca07416e74c9a2
+size 106442752