Update duckdb index files

.gitattributes

@@ -53,3 +53,4 @@ 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
 train.txt filter=lfs diff=lfs merge=lfs -text
+ml4pubmed--pubmed-classification-20k/train/index.duckdb filter=lfs diff=lfs merge=lfs -text

ml4pubmed--pubmed-classification-20k/train/index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:9d35d5c3823ae9a3d84b978ef01d25251812f164cb72c87f3db004bdcbbd8c06
+size 36188160