Update duckdb index files

.gitattributes

@@ -117,3 +117,4 @@ default/meta.stackoverflow.com/index.duckdb filter=lfs diff=lfs merge=lfs -text
 default/gis.stackexchange.com/index.duckdb filter=lfs diff=lfs merge=lfs -text
 default/gamedev.stackexchange.com/index.duckdb filter=lfs diff=lfs merge=lfs -text
 default/magento.stackexchange.com/index.duckdb filter=lfs diff=lfs merge=lfs -text
+default/mathematica.stackexchange.com/index.duckdb filter=lfs diff=lfs merge=lfs -text

default/mathematica.stackexchange.com/index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:ff493b20ccf22ef7eb5cc8976f2cc6ac9883f113c0cf23322fa933fef6d05bbb
+size 193474560