Update duckdb index files

.gitattributes

@@ -58,3 +58,4 @@ Biochemistry_Lippincott/train/index.duckdb filter=lfs diff=lfs merge=lfs -text
 Cell_Biology_Alberts/train/index.duckdb filter=lfs diff=lfs merge=lfs -text
 Histology_Ross/train/index.duckdb filter=lfs diff=lfs merge=lfs -text
 Gynecology_Novak/train/index.duckdb filter=lfs diff=lfs merge=lfs -text
+Immunology_Janeway/train/index.duckdb filter=lfs diff=lfs merge=lfs -text

Immunology_Janeway/train/index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:1b3ac44215cd086758b9bbda2b715c8231e21b8c04ba2f8f663e4a6211f6aad0
+size 9449472