Ansible 2.5 dependency for 1.3.0 to changelog

Author: nvaatstra

CHANGELOG.md

@@ -6,6 +6,7 @@ NEW FEATURES:
 IMPROVEMENTS:
 - Repositories for PowerDNS dnsdist 1.5 added by @xgin ([\#25](https://github.com/PowerDNS/dnsdist-ansible/pull/25))
 - Backwards compatibility introduced for dnsdist PR [\#7820](https://github.com/PowerDNS/pdns/pull/7820) ([\#27](https://github.com/PowerDNS/dnsdist-ansible/pull/27))
+- Updated Ansible dependency to 2.5 ([\#28](https://github.com/PowerDNS/dnsdist-ansible/pull/28))
 
 ## v1.2.1 (2019-02-19)