Fixup CI versions. Drop all older RHEL releases which are broken.

Author: geerlingguy

molecule/default/molecule.yml

@@ -8,7 +8,7 @@ driver:
   name: docker
 platforms:
   - name: instance
-    image: "geerlingguy/docker-${MOLECULE_DISTRO:-rockylinux8}-ansible:latest"
+    image: "geerlingguy/docker-${MOLECULE_DISTRO:-rockylinux9}-ansible:latest"
     command: ${MOLECULE_DOCKER_COMMAND:-""}
     volumes:
       - /sys/fs/cgroup:/sys/fs/cgroup:rw