Update duckdb index files

.gitattributes

@@ -52,3 +52,4 @@ saved_model/**/* filter=lfs diff=lfs merge=lfs -text
 *.jpg filter=lfs diff=lfs merge=lfs -text
 *.jpeg filter=lfs diff=lfs merge=lfs -text
 *.webp filter=lfs diff=lfs merge=lfs -text
+martingrzzler--mrc_imageability_ratings/train/index.duckdb filter=lfs diff=lfs merge=lfs -text

martingrzzler--mrc_imageability_ratings/train/index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:e2e046cb3631899ac61107b393fa974c9a461b1c8ca6ccc305bfc575d595f558
+size 1323008