ci: update Mergify config for automatic merging of backports to 3.10

The `queue_rules` were updated earlier, but the rule for moving a
backport PR to the queue was not. By splitting the conditions for
release-v3.9 and other (newer) releases, the PRs can be queued with
their required Kubernetes version tests.

Signed-off-by: Niels de Vos <ndevos@ibm.com>

.mergify.yml

@@ -200,6 +200,32 @@ pull_request_rules:
               - "#changes-requested-reviews-by=0"
               - "approved-reviews-by=@ceph/ceph-csi-contributors"
               - "approved-reviews-by=@ceph/ceph-csi-maintainers"
+              - "status-success=DCO"
+              - "status-success=codespell"
+              - "status-success=commitlint"
+              - "status-success=go-test"
+              - "status-success=golangci-lint"
+              - "status-success=lint-extras"
+              - "status-success=mod-check"
+              - "status-success=multi-arch-build"
+              - "status-success=ci/centos/k8s-e2e-external-storage/1.26"
+              - "status-success=ci/centos/k8s-e2e-external-storage/1.27"
+              - "status-success=ci/centos/k8s-e2e-external-storage/1.28"
+              - "status-success=ci/centos/mini-e2e-helm/k8s-1.26"
+              - "status-success=ci/centos/mini-e2e-helm/k8s-1.27"
+              - "status-success=ci/centos/mini-e2e-helm/k8s-1.28"
+              - "status-success=ci/centos/mini-e2e/k8s-1.26"
+              - "status-success=ci/centos/mini-e2e/k8s-1.27"
+              - "status-success=ci/centos/mini-e2e/k8s-1.28"
+              - "status-success=ci/centos/upgrade-tests-cephfs"
+              - "status-success=ci/centos/upgrade-tests-rbd"
+          - and:
+              - label!=DNM
+              - base=release-v3.9
+              - "#approved-reviews-by>=2"
+              - "#changes-requested-reviews-by=0"
+              - "approved-reviews-by=@ceph/ceph-csi-contributors"
+              - "approved-reviews-by=@ceph/ceph-csi-maintainers"
               - "status-success=codespell"
               - "status-success=multi-arch-build"
               - "status-success=go-test"