Update duckdb index files

.gitattributes

@@ -437,3 +437,4 @@ default/buddhism/index.duckdb filter=lfs diff=lfs merge=lfs -text
 default/chemistry/index.duckdb filter=lfs diff=lfs merge=lfs -text
 default/bitcoin.meta/index.duckdb filter=lfs diff=lfs merge=lfs -text
 default/chinese.meta/index.duckdb filter=lfs diff=lfs merge=lfs -text
+default/christianity.meta/index.duckdb filter=lfs diff=lfs merge=lfs -text

default/christianity.meta/index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:f065e1a76433a8fd3973ca85a57fecb847cba7d910b725f23bfd2e35dc31cf27
+size 19673088