Add Renovate for DevOps (#14)

Add Renovate for DevOps

Signed-off-by: Gary Kim <gary@garykim.dev>

Reviewed-on: https://gitea.com/gitea/awesome-gitea/pulls/14
Reviewed-by: 6543 <6543@noreply.gitea.io>
Reviewed-by: techknowlogick <techknowlogick@gitea.io>

README.md

@@ -50,6 +50,7 @@ A curated list of awesome projects related to Gitea.
 * [Concourse](https://www.concourse-ci.org/) - partially can be integrated with Gitea. see https://discuss.concourse-ci.org/t/concourse-ci-and-gitea-oauth/1475
 * [drone](https://github.com/drone/drone) - Drone is a Container-Native, Continuous Delivery Platform. Built-in Gitea support.
 * [Jenkins](https://github.com/jenkinsci/gitea-plugin) - Gitea plugin for jenkins.
+* [Renovate](https://github.com/renovatebot/renovate) - Gitea compatible configurable universal dependability update tool
 
 ### Mobile