Update duckdb index files

.gitattributes

@@ -85,3 +85,4 @@ YoutubeSubtitles/partial-test/index.duckdb filter=lfs diff=lfs merge=lfs -text
 Enron[[:space:]]Emails/train/index.duckdb filter=lfs diff=lfs merge=lfs -text
 Books3/partial-train/index.duckdb filter=lfs diff=lfs merge=lfs -text
 Pile-CC/partial-train/index.duckdb filter=lfs diff=lfs merge=lfs -text
+PubMed[[:space:]]Abstracts/partial-train/index.duckdb filter=lfs diff=lfs merge=lfs -text

PubMed Abstracts/partial-train/index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:5d26764c67f5177f8adf7caea46a25955007a13622180b3d53b96cc4a8dad2f2
+size 8977133568