Update CHANGELOG.md

Co-authored-by: Raphael Guzman <38401847+guzman-raphael@users.noreply.github.com>

Author: dimitri-yatsenko

CHANGELOG.md

@@ -1,6 +1,6 @@
 ## Release notes
 
-### 0.12.8 -- Dec 22, 2020
+### 0.12.8 -- Jan 12, 2021
 * table.children, .parents, .descendents, and ancestors can return queryable objects. PR #833
 * Load dependencies before querying dependencies. (#179) PR #833
 * Fix display of part tables in `schema.save`. (#821) PR #833