ci: add current Ubuntu releases

Add Ubuntu latest (currently noble), rolling (currently oracular), and
devel (currently plucky) to the CI.

Author: bdrung

.github/workflows/ci.yaml

@@ -18,6 +18,9 @@ jobs:
           - debian:unstable-slim
           - ubuntu:focal
           - ubuntu:jammy
+          - ubuntu:latest
+          - ubuntu:rolling
+          - ubuntu:devel
         yaml_package:
           - python3-ruamel.yaml
           - python3-yaml