Update duckdb index files

.gitattributes

@@ -137,3 +137,4 @@ extractive_dpr_agent_rest_20splits_maxlen150 filter=lfs diff=lfs merge=lfs -text
 extractive_dpr_agent_rest_20splits_maxlen25 filter=lfs diff=lfs merge=lfs -text
 extractive_dpr_agent_rest_20splits_maxlen50 filter=lfs diff=lfs merge=lfs -text
 extractive_dpr_agent_first_20splits_maxlen150/ filter=lfs diff=lfs merge=lfs -text
+dpr-first-0%-maxlen-400/train/index.duckdb filter=lfs diff=lfs merge=lfs -text

dpr-first-0%-maxlen-400/train/index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:6cadfcd90870b908122b96f36c8978b8db0f8d020d7981865a45ad242f4b5e5c
+size 1585152