Update duckdb index files

.gitattributes

@@ -343,3 +343,4 @@ sl_legislation/train/index.duckdb filter=lfs diff=lfs merge=lfs -text
 et_all/train/index.duckdb filter=lfs diff=lfs merge=lfs -text
 en_other/partial-train/index.duckdb filter=lfs diff=lfs merge=lfs -text
 en_wikipedia/partial-train/index.duckdb filter=lfs diff=lfs merge=lfs -text
+all_contracts/partial-train/index.duckdb filter=lfs diff=lfs merge=lfs -text

all_contracts/partial-train/index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:75cc9b0eaa1d63a30c37319a40ee1e59054820dc2ae0d2111d08d1875e4cb411
+size 3877908480