fix: add gh actions badge (#233)

fixes
https://github.com/orgs/bakdata/projects/7/views/2?pane=issue&itemId=68163319

Co-authored-by: kubectl <[email protected]>

README.md

@@ -1,4 +1,4 @@
-[![Build Status](https://dev.azure.com/bakdata/public/_apis/build/status/bakdata.streams-bootstrap?branchName=master)](https://dev.azure.com/bakdata/public/_build/latest?definitionId=5&branchName=master)
+[![Build Status](https://github.com/bakdata/streams-bootstrap/actions/workflows/build-and-publish.yaml/badge.svg?event=push)](https://github.com/bakdata/streams-bootstrap/actions/workflows/build-and-publish.yaml/badge.svg?event=push)
 [![Sonarcloud status](https://sonarcloud.io/api/project_badges/measure?project=com.bakdata.kafka%3Astreams-bootstrap&metric=alert_status)](https://sonarcloud.io/dashboard?id=com.bakdata.kafka%3Astreams-bootstrap)
 [![Code coverage](https://sonarcloud.io/api/project_badges/measure?project=com.bakdata.kafka%3Astreams-bootstrap&metric=coverage)](https://sonarcloud.io/dashboard?id=com.bakdata.kafka%3Astreams-bootstrap)
 [![Maven](https://img.shields.io/maven-central/v/com.bakdata.kafka/streams-bootstrap.svg)](https://search.maven.org/search?q=g:com.bakdata.kafka%20AND%20a:streams-bootstrap&core=gav)