Update duckdb index files

.gitattributes

@@ -60,3 +60,4 @@ liuyanchen1015--MULTI_VALUE_mnli_aint_have/train/index.duckdb filter=lfs diff=lf
 default/dev_matched/index.duckdb filter=lfs diff=lfs merge=lfs -text
 default/dev_mismatched/index.duckdb filter=lfs diff=lfs merge=lfs -text
 default/test_matched/index.duckdb filter=lfs diff=lfs merge=lfs -text
+default/test_mismatched/index.duckdb filter=lfs diff=lfs merge=lfs -text

default/test_mismatched/index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:d98ea8e54e403c13a4c51e16a66b51245ee3e858e7495ddc50e891773e781818
+size 1060864