add 'lyrical' to CI

Author: christian-rauch

.github/workflows/colcon.yml

@@ -14,6 +14,7 @@ jobs:
         include:
             - {image: "ubuntu:22.04", ros: humble}
             - {image: "ubuntu:24.04", ros: jazzy}
+            - {image: "ubuntu:26.04", ros: lyrical}
 
     container:
       image: ${{ matrix.image }}