Update RHCOS 4.18 bootimage metadata to 418.94.202411221729-0

The changes done here will update the RHCOS 4.18 bootimage metadata
and address the following issues:

OCPBUGS-44310 - Request to update RHCOS bootimage for nmstate
COS-2993 - Stop publishing Alibaba RHCOS images

This change was generated using

```
plume cosa2stream --target data/data/coreos/rhcos.json                \
    --distro rhcos --no-signatures --name 4.18-9.4                    \
    --url https://rhcos.mirror.openshift.com/art/storage/prod/streams \
    x86_64=418.94.202411221729-0                                      \
    aarch64=418.94.202411221729-0                                     \
    s390x=418.94.202411221729-0                                       \
    ppc64le=418.94.202411221729-0
```