Update CI distros (#40)

* Drop rolling and add kilted

* Also drop EOL 20.04

Author: Benedikt Mersch

.github/workflows/cpp.yml

@@ -14,7 +14,7 @@ jobs:
     runs-on: ${{ matrix.os }}
     strategy:
       matrix:
-        os: [ubuntu-20.04, ubuntu-22.04, ubuntu-24.04]
+        os: [ubuntu-22.04, ubuntu-24.04]
     steps:
       - uses: actions/checkout@v3
       - name: Setup cmake
@@ -35,7 +35,7 @@ jobs:
     runs-on: ${{ matrix.os }}
     strategy:
       matrix:
-        os: [ubuntu-20.04, ubuntu-22.04, ubuntu-24.04]
+        os: [ubuntu-22.04, ubuntu-24.04]
 
     steps:
       - uses: actions/checkout@v3

.github/workflows/ros.yml

@@ -11,7 +11,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        release: [humble, iron, jazzy, rolling]
+        release: [humble, iron, jazzy, kilted]
     container: osrf/ros:${{ matrix.release }}-desktop
     steps:
       - name: Setup cmake