Update duckdb index files

.gitattributes

@@ -4,3 +4,4 @@ HHousen--ParaSCI/train/index.duckdb filter=lfs diff=lfs merge=lfs -text
 HHousen--ParaSCI/validation/index.duckdb filter=lfs diff=lfs merge=lfs -text
 HHousen--ParaSCI/train/0000.parquet filter=lfs diff=lfs merge=lfs -text
 default/train/0000.parquet filter=lfs diff=lfs merge=lfs -text
+default/validation/index.duckdb filter=lfs diff=lfs merge=lfs -text

default/validation/index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:b7552297110b66b2779af6887473956fb7470bfdd01a50cff3481869231c2d4c
+size 2633728