Update duckdb index files

.gitattributes

@@ -133,3 +133,4 @@ pt_other/validation/index.duckdb filter=lfs diff=lfs merge=lfs -text
 mt_caselaw/validation/index.duckdb filter=lfs diff=lfs merge=lfs -text
 ro_contracts/validation/index.duckdb filter=lfs diff=lfs merge=lfs -text
 ro_legislation/validation/index.duckdb filter=lfs diff=lfs merge=lfs -text
+lv_contracts/validation/index.duckdb filter=lfs diff=lfs merge=lfs -text

lv_contracts/validation/index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:091b5180e028413039db7b308367bae58f454f1a0b08a0de5e5d95c5dc48422c
+size 51392512