Update duckdb index files

.gitattributes

@@ -284,3 +284,4 @@ sv_caselaw/train/index.duckdb filter=lfs diff=lfs merge=lfs -text
 nl_legislation/validation/index.duckdb filter=lfs diff=lfs merge=lfs -text
 all_caselaw/partial-validation/index.duckdb filter=lfs diff=lfs merge=lfs -text
 all_other/partial-validation/index.duckdb filter=lfs diff=lfs merge=lfs -text
+bg_all/partial-validation/index.duckdb filter=lfs diff=lfs merge=lfs -text

bg_all/partial-validation/index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:0857061834e6a48d0bc51eec869c717246a36a810244172cb8483c1e3aa6b1e4
+size 32256000