When scanning our latest docker image using `trivy` (command: `trivy image docker.io/scylladb/scylla-nightly:latest`), it shows we have OS packages which are out of date. Also removing `openssh-server` and `openssh-client` since we don't use it for our docker images Fixes: https://github.com/scylladb/scylladb/issues/16222 Closes scylladb/scylladb#16224