Update duckdb index files

.gitattributes

@@ -57,3 +57,4 @@ MAUD_v1/MAUD_test.csv filter=lfs diff=lfs merge=lfs -text
 MAUD_v1/MAUD_train.csv filter=lfs diff=lfs merge=lfs -text
 theatticusproject--maud/train/index.duckdb filter=lfs diff=lfs merge=lfs -text
 theatticusproject--maud/test/index.duckdb filter=lfs diff=lfs merge=lfs -text
+theatticusproject--maud/validation/index.duckdb filter=lfs diff=lfs merge=lfs -text

theatticusproject--maud/validation/index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:56ac9040a8cd3c9a5567ccd33b63d27078a79dd2047706e7545c8770b6baa94d
+size 26488832