Replace CI badge from Travis to GitHub

Author: slawekjaranowski

README.md

@@ -3,6 +3,6 @@ Plexus-Resources
 
 [![Apache License, Version 2.0, January 2004](https://img.shields.io/github/license/codehaus-plexus/plexus-resources.svg?label=License)](http://www.apache.org/licenses/)
 [![Maven Central](https://img.shields.io/maven-central/v/org.codehaus.plexus/plexus-resources.svg?label=Maven%20Central)](https://search.maven.org/artifact/org.codehaus.plexus/plexus-resources)
-[![Build Status](https://travis-ci.org/codehaus-plexus/plexus-resources.svg?branch=master)](https://travis-ci.org/codehaus-plexus/plexus-resources)
+[![GitHub CI](https://github.com/codehaus-plexus/plexus-resources/actions/workflows/maven.yml/badge.svg)](https://github.com/codehaus-plexus/plexus-resources/actions/workflows/maven.yml)
 
 The canonical git repository is located at https://github.com/codehaus-plexus/plexus-resources