Update duckdb index files

.gitattributes

@@ -72,3 +72,4 @@ 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
+en_caselaw/validation/index.duckdb filter=lfs diff=lfs merge=lfs -text

en_caselaw/validation/index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:b0f58f720b8f39c81b70765e84368192862b1da40798df432c6ec5ebfbd5c9e7
+size 113520640