Update duckdb index files

.gitattributes

@@ -65,3 +65,4 @@ de_legislation/validation/index.duckdb filter=lfs diff=lfs merge=lfs -text
 all_caselaw/validation/index.duckdb filter=lfs diff=lfs merge=lfs -text
 cs_legislation/validation/index.duckdb filter=lfs diff=lfs merge=lfs -text
 bg_contracts/train/index.duckdb filter=lfs diff=lfs merge=lfs -text
+da_contracts/validation/index.duckdb filter=lfs diff=lfs merge=lfs -text

da_contracts/validation/index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:d8e762325726d707b36cbc90e9dac2b8fb81481955cce074c2bbe0f4cb811bdf
+size 26488832