Update the version label in Dockerfile

[rakshithakamath94]

Hi @andrewschoen ,

        },
         "Labels": {
              "CEPH_POINT_RELEASE": "",
              "GIT_BRANCH": "main",
              "GIT_CLEAN": "True",
              "GIT_COMMIT": "55ad0f204a1d654ee565abf874aecad0cc209d0e",
              "GIT_REPO": "https://github.com/ibmstorage/rhceph-container.git",
              "RELEASE": "release-9.0",
              "architecture": "x86_64",
              "build-date": "2025-10-27T20:14:58Z",
              "ceph": "True",
              "com.redhat.component": "rhceph-container",
              "com.redhat.license_terms": "https://www.redhat.com/en/about/red-hat-end-user-license-agreements#UBI",
              "cpe": "cpe:/a:redhat:ceph_storage:9::el10",
              "description": "Red Hat Ceph Storage 9",
              "distribution-scope": "public",
              "io.buildah.version": "1.41.4",
              "io.k8s.description": "Red Hat Ceph Storage 9",
              "io.k8s.display-name": "Red Hat Ceph Storage 9 on RHEL 9",
              "io.openshift.expose-services": "",
              "io.openshift.tags": "rhceph ceph",
              "maintainer": "Guillaume Abrioux <[email protected]>",
              "name": "rhceph",
              "org.opencontainers.image.created": "",
              "org.opencontainers.image.revision": "124f34e6671107088445cd658bdc85c9c5718f40",
              "quay.expires-after": "5d",
              "release": "1758699349",
              "summary": "Provides the latest Red Hat Ceph Storage 9 on RHEL 9 in a fully featured and supported base image.",
              "url": "https://catalog.redhat.com/en/search?searchType=containers",
              "vcs-ref": "124f34e6671107088445cd658bdc85c9c5718f40",
              "vcs-type": "git",
              "vendor": "Red Hat, Inc.",
              "version": "9"
         },

The version tag is coming below the vendor and it kinda confusing people whether the base image is ubi9 or ubi8.

Please feel free to merge or close this merge if you feel like the change is valid.