Update duckdb index files

.gitattributes

@@ -4,3 +4,4 @@ Colby--quotes/train/index.duckdb filter=lfs diff=lfs merge=lfs -text
 Colby--quotes/train/0000.parquet filter=lfs diff=lfs merge=lfs -text
 default/train/0000.parquet filter=lfs diff=lfs merge=lfs -text
 default/train/index.duckdb 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:fbf268e137b12a624b0f36785acf2271724a01aae0b0303b6389b3d138251ee7
+size 2109440