Update duckdb index files

.gitattributes

@@ -135,3 +135,4 @@ ro_contracts/validation/index.duckdb filter=lfs diff=lfs merge=lfs -text
 ro_legislation/validation/index.duckdb filter=lfs diff=lfs merge=lfs -text
 lv_contracts/validation/index.duckdb filter=lfs diff=lfs merge=lfs -text
 pt_all/validation/index.duckdb filter=lfs diff=lfs merge=lfs -text
+sl_caselaw/validation/index.duckdb filter=lfs diff=lfs merge=lfs -text

sl_caselaw/validation/index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:e8a065d53a10d566a5c2c7c8505ac03457dba32f9f5fe00540deab22df7b8c67
+size 40382464