Update duckdb index files

.gitattributes

@@ -53,3 +53,4 @@ saved_model/**/* filter=lfs diff=lfs merge=lfs -text
 *.jpg filter=lfs diff=lfs merge=lfs -text
 *.jpeg filter=lfs diff=lfs merge=lfs -text
 *.webp filter=lfs diff=lfs merge=lfs -text
+microsoft--LCC_csharp/test/index.duckdb filter=lfs diff=lfs merge=lfs -text

microsoft--LCC_csharp/test/index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:23ec4eac0de46ef9d063c66a687c8b82cf8c3c365a21b7dc86508691f7d38721
+size 109326336