Temporarily use prerelease version of ROS 2 to get fix for ament_lint#428

Author: nnmm

.github/workflows/rust.yml

@@ -49,6 +49,7 @@ jobs:
     - name: Setup ROS environment
       uses: ros-tooling/[email protected]
       with:
+        use-ros2-testing: true
         required-ros-distributions: ${{ matrix.ros_distribution }}
 
     - name: Setup Rust