Update duckdb index files

.gitattributes

@@ -246,3 +246,4 @@ cs_caselaw/validation/index.duckdb filter=lfs diff=lfs merge=lfs -text
 cs_wikipedia/validation/index.duckdb filter=lfs diff=lfs merge=lfs -text
 de_wikipedia/validation/index.duckdb filter=lfs diff=lfs merge=lfs -text
 et_legislation/validation/index.duckdb filter=lfs diff=lfs merge=lfs -text
+all_contracts/validation/index.duckdb filter=lfs diff=lfs merge=lfs -text

all_contracts/validation/index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:7113867efb90995a0c2074967d17885062da93ce3e050b1975bd9e2c83c06d57
+size 689188864