Update duckdb index files

.gitattributes

@@ -71,3 +71,4 @@ el_other/validation/index.duckdb filter=lfs diff=lfs merge=lfs -text
 es_caselaw/validation/index.duckdb filter=lfs diff=lfs merge=lfs -text
 es_other/validation/index.duckdb filter=lfs diff=lfs merge=lfs -text
 et_caselaw/validation/index.duckdb filter=lfs diff=lfs merge=lfs -text
+es_contracts/validation/index.duckdb filter=lfs diff=lfs merge=lfs -text

es_contracts/validation/index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:202f8f47337ca58d8156ea915cda7a991bbce22d01027cb58f5f763569147ab4
+size 61091840