update changelog

changelog.md

@@ -2,6 +2,9 @@
 
 All notable changes to this project will be documented in this file.
 
+## [0.56] - 2023-02-15
+- Change Customers on home dashboard to be the first series shown
+
 ## [0.55] - 2023-02-12
 - POL1-648 minor change/fix: don't show IPv6 graph sections for dashboards lacking IPv6 graphs