2.3.0 release (previous 2.2.7) + release notes updated [ci skip]

Author: shipkit-org

docs/release-notes.md

@@ -1,5 +1,9 @@
 <sup><sup>*Release notes were automatically generated by [Shipkit](http://shipkit.org/)*</sup></sup>
 
+#### 2.3.0
+ - 2020-01-18 - [3 commits](https://github.com/mockito/shipkit/compare/v2.2.7...v2.3.0) by [shipkit.org automated bot](https://github.com/shipkit-org) (2), [Karol Wrótniak](https://github.com/koral--) (1) - published to [![Gradle](https://img.shields.io/badge/Gradle-v2.3.0-blue.svg)](https://plugins.gradle.org/plugin/org.shipkit.java/2.3.0)
+ - Version of shipkit upgraded to 2.2.7 [(#855)](https://github.com/mockito/shipkit/pull/855)
+
 #### 2.2.7
  - 2020-01-13 - [11 commits](https://github.com/mockito/shipkit/compare/v2.2.6...v2.2.7) by [Karol Wrótniak](https://github.com/koral--) (7), [shipkit.org automated bot](https://github.com/shipkit-org) (2), [Szczepan Faber](https://github.com/mockitoguy) (2) - published to [![Gradle](https://img.shields.io/badge/Gradle-v2.2.7-blue.svg)](https://plugins.gradle.org/plugin/org.shipkit.java/2.2.7)
  - Fixed the pom packaging bug [(#854)](https://github.com/mockito/shipkit/pull/854)

version.properties

@@ -1,6 +1,6 @@
 #Version of the produced binaries. This file is intended to be checked-in.
 #It will be automatically bumped by release automation.
-version=2.3.0
+version=2.3.1
 
 #Last previous release version
-previousVersion=2.2.7
+previousVersion=2.3.0