Update duckdb index files

.gitattributes

@@ -525,3 +525,4 @@ sk_other/train/index.duckdb filter=lfs diff=lfs merge=lfs -text
 sl_other/train/index.duckdb filter=lfs diff=lfs merge=lfs -text
 sl_wikipedia/train/index.duckdb filter=lfs diff=lfs merge=lfs -text
 sv_caselaw/train/index.duckdb filter=lfs diff=lfs merge=lfs -text
+lv_legislation/validation/index.duckdb filter=lfs diff=lfs merge=lfs -text

lv_legislation/validation/index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:3ace38ae3df724c2905f03bb6b0d55d5718442a2275966d6112fe0d87bc2576c
+size 73412608