docs(readme): mark project as "unsupported" as maintainer is not committed to getting it back to work again

Author: Addono

README.md

@@ -2,7 +2,7 @@
 
 
 [![License](https://img.shields.io/github/license/Addono/docker-jira-software-standalone?style=flat-square)](https://github.com/Addono/docker-jira-software-standalone/blob/master/LICENSE)
-[![Project Status: Active – The project has reached a stable, usable state and is being actively developed.](https://img.shields.io/badge/project%20status-Active-greengrass?style=flat-square)](https://www.repostatus.org/#active)
+[![Project Status: Unsupported – The project has reached a stable, usable state but the author(s) have ceased all work on it. A new maintainer may be desired.](https://www.repostatus.org/badges/latest/unsupported.svg)](https://www.repostatus.org/#unsupported)
 ![GitHub Workflow Status - Docker](https://img.shields.io/github/actions/workflow/status/Addono/docker-jira-software-standalone/dockerpublish.yml?style=flat-square)
 [
 ![Docker Image Pulls (all-time)](https://img.shields.io/docker/pulls/addono/jira-software-standalone?style=flat-square)