Disable ubuntu 22.04 again, as gap is outdated there

Author: tobiasdiez

.github/workflows/ci.yml

@@ -26,7 +26,7 @@ jobs:
           - debian:forky
           - ghcr.io/void-linux/void-glibc-full
           - archlinux
-          - ubuntu:22.04
+          #- ubuntu:22.04 - gap is outdated there (only 4.11)
           - ubuntu:24.04
           - ubuntu:25.04
     container: