Update duckdb index files

.gitattributes

@@ -54,3 +54,4 @@ saved_model/**/* filter=lfs diff=lfs merge=lfs -text
 *.jpeg filter=lfs diff=lfs merge=lfs -text
 *.webp filter=lfs diff=lfs merge=lfs -text
 ChanceFocus--flare-convfinqa/test/index.duckdb filter=lfs diff=lfs merge=lfs -text
+ChanceFocus--flare-convfinqa/valid/index.duckdb filter=lfs diff=lfs merge=lfs -text

ChanceFocus--flare-convfinqa/valid/index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:2aaf5e9d6ece02eda12987387c075caad8680d416261ef9f881ce4dea6dcd649
+size 13643776