Update duckdb index files

.gitattributes

@@ -140,3 +140,4 @@ extractive_dpr_agent_first_20splits_maxlen150/ filter=lfs diff=lfs merge=lfs -te
 dpr-first-0%-maxlen-400/train/index.duckdb filter=lfs diff=lfs merge=lfs -text
 dpr-first-0%-maxlen-400/validation/index.duckdb filter=lfs diff=lfs merge=lfs -text
 dpr-first-0%-maxlen-400/test/index.duckdb filter=lfs diff=lfs merge=lfs -text
+dpr-first-10%-maxlen-500/train/index.duckdb filter=lfs diff=lfs merge=lfs -text

dpr-first-10%-maxlen-500/train/index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:c63f780177a12ed8a635b24cf58d6b7f533a1fb768f48aae916e82e4171db40f
+size 7614464