Update Rook and Ceph versions for getting started guide
The current versions do not work well with Ubuntu 24.04 hosts. Ceph pods will enter a crash loop due to modprobe being unable to load the rbd kernel modules. This is likely due to an incompatibility with the host's newer kernel similar to [1].
This raises the versions specified in scripts and examples belonging to the getting started guide to a combination that is working with Ubuntu 24.04.