Election for Yannic Bürgmann as Committer on Eclipse Ditto

Yannic is contributing to Eclipse Ditto for over a year now and provided some major improvements to the project.
Besides many bugfixes and documentation improvements he brought some real innovations to the codebase, e.g.:
- using Prometheus as metrics backend and harmonizing the way Ditto gathers metrics (in PRs https://github.com/eclipse/ditto/pull/186 https://github.com/eclipse/ditto/pull/313
- adding global serialization registries in order to simplify JSON serialization/deserialization: https://github.com/eclipse/ditto/pull/374 and https://github.com/eclipse/ditto/pull/394
- unifying the authentication mechanisms and preparing for better extensibility: https://github.com/eclipse/ditto/pull/377

Up to now, he provided 20 PullRequests: https://github.com/eclipse/ditto/pulls?q=is%3Apr+author%3AYannic92

He was also adding and improving examples, e.g.:
- how to integrate Eclipse Ditto with Hono: https://github.com/eclipse/ditto-examples/commit/a79fab72d5e370eec769b1…
- how to test the Ditto payload mapping: https://github.com/eclipse/ditto-examples/commit/f54461fb6cc2568a769b1a…

Additionally he is actively answering Ditto related questions on StackOverflow, e.g.:
https://stackoverflow.com/questions/55454096/no-messagemappingprocessor…

We would like to welcome Yannic into the committer rank as he clearly is one the most active contributors to the project.