only run CI on rolling

Author: adivardi

.github/workflows/test.yml

@@ -16,7 +16,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-          ros_distro: [kilted, rolling]
+          ros_distro: [rolling]
     steps:
     - uses: actions/checkout@v2
     - name: Install Cyclone DDS