Fix #181 - update to char version 5.0.0 to match readme

Author: cfis

charts/docker-mailserver/Chart.yaml

@@ -2,7 +2,7 @@ apiVersion: v2
 appVersion: "15.0.2"
 description: A fullstack but simple mailserver (smtp, imap, antispam, antivirus, ssl...) using Docker.
 name: docker-mailserver
-version: 4.2.4
+version: 5.0.0
 sources:
 - https://github.com/docker-mailserver/docker-mailserver-helm
 maintainers: