Update duckdb index files

.gitattributes

@@ -452,3 +452,4 @@ default/kab.train/index.duckdb filter=lfs diff=lfs merge=lfs -text
 default/ky.validation/index.duckdb filter=lfs diff=lfs merge=lfs -text
 default/lg.test/index.duckdb filter=lfs diff=lfs merge=lfs -text
 default/ha.train/index.duckdb filter=lfs diff=lfs merge=lfs -text
+default/fy_NL.validation/index.duckdb filter=lfs diff=lfs merge=lfs -text

default/fy_NL.validation/index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:51bfb33bb4b4f578eaad420b5c65d774165cfb3eb38ceac4dfd97b601f7e09e2
+size 2633728