Update duckdb index files

.gitattributes

@@ -27,3 +27,4 @@ rte/train/index.duckdb filter=lfs diff=lfs merge=lfs -text
 rte/validation/index.duckdb filter=lfs diff=lfs merge=lfs -text
 wic/test/index.duckdb filter=lfs diff=lfs merge=lfs -text
 wic/train/index.duckdb filter=lfs diff=lfs merge=lfs -text
+wic/validation/index.duckdb filter=lfs diff=lfs merge=lfs -text

wic/validation/index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:56f2bf0bacacc95d20d26b26a55d9885f14cb000e38045c64da5e0b474900a86
+size 1060864