Update duckdb index files

.gitattributes

@@ -88,3 +88,4 @@ es_caselaw/validation/index.duckdb filter=lfs diff=lfs merge=lfs -text
 bg_wikipedia/validation/index.duckdb filter=lfs diff=lfs merge=lfs -text
 de_other/validation/index.duckdb filter=lfs diff=lfs merge=lfs -text
 el_other/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:dfee868d6692707443f6e9f3551f1e0d5e62882224c5cf4053e56d27a3dd0f61
+size 14430208