Update duckdb index files

.gitattributes

@@ -56,3 +56,4 @@ test.csv filter=lfs diff=lfs merge=lfs -text
 train.csv filter=lfs diff=lfs merge=lfs -text
 val.csv filter=lfs diff=lfs merge=lfs -text
 ronitHF--pubmed-10k/test/index.duckdb filter=lfs diff=lfs merge=lfs -text
+ronitHF--pubmed-10k/train/index.duckdb filter=lfs diff=lfs merge=lfs -text

ronitHF--pubmed-10k/train/index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:70ca2879e5ddae1d84472025c070fc4f373f9c37692c103f4d305596fdcbaf45
+size 174862336