Bumped setup-ros to v0.6

Author: maspe36

.github/workflows/rust.yml

@@ -45,7 +45,7 @@ jobs:
         echo ::set-output name=package_list::$(colcon list --names-only)
 
     - name: Setup ROS environment
-      uses: ros-tooling/setup-ros@v0.3
+      uses: ros-tooling/setup-ros@v0.6
       with:
         required-ros-distributions: ${{ matrix.ros_distribution }}