Update duckdb index files

.gitattributes

@@ -52,3 +52,4 @@ 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
+LangChainHub-Prompts--QA_Refine/train/index.duckdb filter=lfs diff=lfs merge=lfs -text

LangChainHub-Prompts--QA_Refine/train/index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:65c5b6ecc52f9ef4c03f93712e237f2e147d220146052507a7b5261f7c049216
+size 1060864