Remove Travis-ci, replace status badge with GitHub action status

Author: mrotteveel

.travis.yml

@@ -1,7 +1,6 @@
 firebird-testcontainers-java
 ============================
-
-[![Build Status](https://travis-ci.com/FirebirdSQL/firebird-testcontainers-java.svg?branch=master)](https://travis-ci.com/FirebirdSQL/firebird-testcontainers-java)
+[![Java CI with Maven](https://github.com/FirebirdSQL/firebird-testcontainers-java/actions/workflows/maven.yml/badge.svg?branch=master)](https://github.com/FirebirdSQL/firebird-testcontainers-java/actions/workflows/maven.yml?query=branch%3Amaster)
 [![MavenCentral](https://maven-badges.herokuapp.com/maven-central/org.firebirdsql/firebird-testcontainers-java/badge.svg)](https://maven-badges.herokuapp.com/maven-central/org.firebirdsql/firebird-testcontainers-java/)
 
 Firebird-testcontainers-java is a module for [Testcontainers](https://www.testcontainers.org/)