mqtt-client does not build with lyrical

We just recognized that the `mqtt-client` does not build on our machines as well as the Hydra build. See the [Hydra master-build for mqtt-client](https://hydra.iid.ciirc.cvut.cz/build/4339348) and the corresponding [log](https://hydra.iid.ciirc.cvut.cz/build/4339348/nixlog/1). ``` CMake Error at CMakeLists.txt:38 (ament_target_dependencies): Unknown CMake command "ament_target_dependencies". -- Configuring incomplete, errors occurred! ``` The issue was fixed upstream with https://github.com/ika-rwth-aachen/mqtt_client/pull/94 but it was not yet tagged/released. What is the best approach to fix this? * Pull the latest master upstream version in nix-ros-overlay? * Wait for a new upstream tag/release? * Add upstream patches to nix-ros-overlay? I will try my best to help, and try to fix this by pulling the latest master.