Update CI Badges.

Remove TravisCI and SemaphoreCI badge.
They used to work in the past but there seem to have been changes to the
CI hosters that broke the build.
Add CircleCI, this still seems to work in other repositories.

README.md

@@ -3,8 +3,7 @@
 Easing Simple Message-oriented Middleware Tasks with Clojure (and Java)
 
 [![Clojars Project](https://img.shields.io/clojars/v/bowerick.svg)](https://clojars.org/bowerick)
-[![Build Status TravicCI](https://travis-ci.com/ruedigergad/bowerick.svg?branch=master)](https://travis-ci.com/ruedigergad/bowerick)
-[![Build Status SemaphoreCI](https://semaphoreci.com/api/v1/ruedigergad/bowerick/branches/master/badge.svg)](https://semaphoreci.com/ruedigergad/bowerick)
+[![CircleCI](https://dl.circleci.com/status-badge/img/gh/ruedigergad/bowerick/tree/master.svg?style=svg)](https://dl.circleci.com/status-badge/redirect/gh/ruedigergad/bowerick/tree/master)
 [![lein test](https://github.com/ruedigergad/bowerick/actions/workflows/lein_test.yml/badge.svg)](https://github.com/ruedigergad/bowerick/actions/workflows/lein_test.yml)
 [![Coverage Status](https://coveralls.io/repos/github/ruedigergad/bowerick/badge.svg?branch=master)](https://coveralls.io/github/ruedigergad/bowerick?branch=master)